feat: Improve Public URL Readability (#2482)

* added support for group slugs

* modified frontend to use links with group slug

* fixed test refs

* unused import

---------

Co-authored-by: Hayden <64056131+hay-kot@users.noreply.github.com>

alembic/versions/2023-08-06-21.00.34_04ac51cbe9a4_added_group_slug.py

@@ -0,0 +1,56 @@
+"""added group slug
+
+Revision ID: 04ac51cbe9a4
+Revises: b3dbb554ba53
+Create Date: 2023-08-06 21:00:34.582905
+
+"""
+import sqlalchemy as sa
+from slugify import slugify
+from sqlalchemy.orm import Session
+
+from alembic import op
+from mealie.db.models.group.group import Group
+
+# revision identifiers, used by Alembic.
+revision = "04ac51cbe9a4"
+down_revision = "b3dbb554ba53"
+branch_labels = None
+depends_on = None
+
+
+def populate_group_slugs(session: Session):
+    groups: list[Group] = session.query(Group).all()
+    seen_slugs: set[str] = set()
+    for group in groups:
+        original_name = group.name
+        attempts = 0
+        while True:
+            slug = slugify(group.name)
+            if slug not in seen_slugs:
+                break
+
+            attempts += 1
+            group.name = f"{original_name} ({attempts})"
+
+        seen_slugs.add(slug)
+        group.slug = slug
+
+    session.commit()
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("groups", sa.Column("slug", sa.String(), nullable=True))
+    op.create_index(op.f("ix_groups_slug"), "groups", ["slug"], unique=True)
+    # ### end Alembic commands ###
+
+    session = Session(bind=op.get_bind())
+    populate_group_slugs(session)
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f("ix_groups_slug"), table_name="groups")
+    op.drop_column("groups", "slug")
+    # ### end Alembic commands ###