Add codespell support and fix a good number of typos with its help (#3270)

More about codespell: https://github.com/codespell-project/codespell .

I personally introduced it to dozens if not hundreds of projects already and so far only positive feedback.

```
❯ grep lint-spell Makefile
	@echo " - lint-spell                       lint spelling"
	@echo " - lint-spell-fix                   lint spelling and fix issues"
lint: lint-frontend lint-backend lint-spell
lint-fix: lint-frontend-fix lint-backend-fix lint-spell-fix
.PHONY: lint-spell
lint-spell: lint-codespell
.PHONY: lint-spell-fix
lint-spell-fix: lint-codespell-fix
❯ git grep lint- -- .forgejo/
.forgejo/workflows/testing.yml:      - run: make --always-make -j$(nproc) lint-backend checks-backend # ensure the "go-licenses" make target runs
.forgejo/workflows/testing.yml:      - run: make lint-frontend
```
so how would you like me to invoke `lint-codespell` on CI? (without that would be IMHO very suboptimal and let typos sneak in)

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3270
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Yaroslav Halchenko <debian@onerussian.com>
Co-committed-by: Yaroslav Halchenko <debian@onerussian.com>

models/actions/tasks_version.go

@@ -13,7 +13,7 @@ import (
 
 // ActionTasksVersion
 // If both ownerID and repoID is zero, its scope is global.
-// If ownerID is not zero and repoID is zero, its scope is org (there is no user-level runner currrently).
+// If ownerID is not zero and repoID is zero, its scope is org (there is no user-level runner currently).
 // If ownerID is zero and repoID is not zero, its scope is repo.
 type ActionTasksVersion struct {
 	ID          int64 `xorm:"pk autoincr"`

models/auth/oauth2_test.go

@@ -60,7 +60,7 @@ func TestOAuth2Application_ContainsRedirectURI_WithPort(t *testing.T) {
 	// not loopback
 	assert.False(t, app.ContainsRedirectURI("http://192.168.0.1:9954/"))
 	assert.False(t, app.ContainsRedirectURI("http://intranet:3456/"))
-	// unparseable
+	// unparsable
 	assert.False(t, app.ContainsRedirectURI(":"))
 }
 

models/auth/session_test.go

@@ -85,7 +85,7 @@ func TestAuthSession(t *testing.T) {
 		err = auth.DestroySession(db.DefaultContext, key)
 		assert.NoError(t, err)
 
-		// Ensure it doens't exists.
+		// Ensure it doesn't exists.
 		ok, err = auth.ExistSession(db.DefaultContext, key)
 		assert.NoError(t, err)
 		assert.False(t, ok)

models/fixtures/TestGetUnmergedPullRequestsByHeadInfoMax/pull_request.yml

@@ -1,7 +1,7 @@
 -
   id: 1001
   type: 0 # pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 1001
   index: 1001
   head_repo_id: 1

models/fixtures/commit_status.yml

@@ -15,7 +15,7 @@
   repo_id: 1
   state: "warning"
   sha: "1234123412341234123412341234123412341234"
-  target_url: https://example.com/converage/
+  target_url: https://example.com/coverage/
   description: My awesome Coverage service
   context: cov/awesomeness
   creator_id: 2
@@ -26,7 +26,7 @@
   repo_id: 1
   state: "success"
   sha: "1234123412341234123412341234123412341234"
-  target_url: https://example.com/converage/
+  target_url: https://example.com/coverage/
   description: My awesome Coverage service
   context: cov/awesomeness
   creator_id: 2

models/fixtures/pull_request.yml

@@ -1,7 +1,7 @@
 -
   id: 1
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 2
   index: 2
   head_repo_id: 1
@@ -16,7 +16,7 @@
 -
   id: 2
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 3
   index: 3
   head_repo_id: 1
@@ -29,7 +29,7 @@
 -
   id: 3
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 8
   index: 1
   head_repo_id: 11
@@ -42,7 +42,7 @@
 -
   id: 4
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 9
   index: 1
   head_repo_id: 48
@@ -55,7 +55,7 @@
 -
   id: 5 # this PR is outdated (one commit behind branch1 )
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 11
   index: 5
   head_repo_id: 1
@@ -68,7 +68,7 @@
 -
   id: 6
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 12
   index: 2
   head_repo_id: 3
@@ -81,7 +81,7 @@
 -
   id: 7
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 19
   index: 1
   head_repo_id: 58
@@ -94,7 +94,7 @@
 -
   id: 8
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 20
   index: 1
   head_repo_id: 23
@@ -103,7 +103,7 @@
 -
   id: 9
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 21
   index: 1
   head_repo_id: 60
@@ -112,7 +112,7 @@
 -
   id: 10
   type: 0 # gitea pull request
-  status: 2 # mergable
+  status: 2 # mergeable
   issue_id: 22
   index: 1
   head_repo_id: 61

models/issues/label_test.go

@@ -234,7 +234,7 @@ func TestGetLabelsByIssueID(t *testing.T) {
 func TestUpdateLabel(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 	label := unittest.AssertExistsAndLoadBean(t, &issues_model.Label{ID: 1})
-	// make sure update wont overwrite it
+	// make sure update won't overwrite it
 	update := &issues_model.Label{
 		ID:           label.ID,
 		Color:        "#ffff00",

models/issues/pull.go

@@ -807,7 +807,7 @@ func UpdateAllowEdits(ctx context.Context, pr *PullRequest) error {
 
 // Mergeable returns if the pullrequest is mergeable.
 func (pr *PullRequest) Mergeable(ctx context.Context) bool {
-	// If a pull request isn't mergable if it's:
+	// If a pull request isn't mergeable if it's:
 	// - Being conflict checked.
 	// - Has a conflict.
 	// - Received a error while being conflict checked.

models/issues/tracked_time.go

@@ -187,8 +187,8 @@ func AddTime(ctx context.Context, user *user_model.User, issue *Issue, amount in
 		Issue: issue,
 		Repo:  issue.Repo,
 		Doer:  user,
-		// Content before v1.21 did store the formated string instead of seconds,
-		// so use "|" as delimeter to mark the new format
+		// Content before v1.21 did store the formatted string instead of seconds,
+		// so use "|" as delimiter to mark the new format
 		Content: fmt.Sprintf("|%d", amount),
 		Type:    CommentTypeAddTimeManual,
 		TimeID:  t.ID,
@@ -267,8 +267,8 @@ func DeleteIssueUserTimes(ctx context.Context, issue *Issue, user *user_model.Us
 		Issue: issue,
 		Repo:  issue.Repo,
 		Doer:  user,
-		// Content before v1.21 did store the formated string instead of seconds,
-		// so use "|" as delimeter to mark the new format
+		// Content before v1.21 did store the formatted string instead of seconds,
+		// so use "|" as delimiter to mark the new format
 		Content: fmt.Sprintf("|%d", removedTime),
 		Type:    CommentTypeDeleteTimeManual,
 	}); err != nil {
@@ -298,8 +298,8 @@ func DeleteTime(ctx context.Context, t *TrackedTime) error {
 		Issue: t.Issue,
 		Repo:  t.Issue.Repo,
 		Doer:  t.User,
-		// Content before v1.21 did store the formated string instead of seconds,
-		// so use "|" as delimeter to mark the new format
+		// Content before v1.21 did store the formatted string instead of seconds,
+		// so use "|" as delimiter to mark the new format
 		Content: fmt.Sprintf("|%d", t.Time),
 		Type:    CommentTypeDeleteTimeManual,
 	}); err != nil {

models/migrations/v1_17/v216.go

@@ -4,4 +4,4 @@
 package v1_17 //nolint
 
 // This migration added non-ideal indices to the action table which on larger datasets slowed things down
-// it has been superceded by v218.go
+// it has been superseded by v218.go

models/repo/archive_download_count.go

@@ -36,7 +36,7 @@ func CountArchiveDownload(ctx context.Context, repoID, releaseID int64, tp git.A
 		return nil
 	}
 
-	// The archive does not esxists in the databse, so let's add it
+	// The archive does not esxists in the database, so let's add it
 	newCounter := &RepoArchiveDownloadCount{
 		RepoID:    repoID,
 		ReleaseID: releaseID,

models/user/setting_keys.go

@@ -8,7 +8,7 @@ const (
 	SettingsKeyHiddenCommentTypes = "issue.hidden_comment_types"
 	// SettingsKeyDiffWhitespaceBehavior is the setting key for whitespace behavior of diff
 	SettingsKeyDiffWhitespaceBehavior = "diff.whitespace_behaviour"
-	// SettingsKeyShowOutdatedComments is the setting key wether or not to show outdated comments in PRs
+	// SettingsKeyShowOutdatedComments is the setting key whether or not to show outdated comments in PRs
 	SettingsKeyShowOutdatedComments = "comment_code.show_outdated"
 	// UserActivityPubPrivPem is user's private key
 	UserActivityPubPrivPem = "activitypub.priv_pem"