Feature: Add the ability to "revert" a CSV import (#1814)

* Allow reverting imports

* Fix tests

* Add currency column to all imports

* Don't auto-enrich demo account

db/migrate/20250206003115_remove_import_status_enum.rb

@@ -0,0 +1,21 @@
+class RemoveImportStatusEnum < ActiveRecord::Migration[7.2]
+  def up
+    change_column_default :imports, :status, nil
+    change_column :imports, :status, :string
+    execute "DROP TYPE IF EXISTS import_status"
+  end
+
+  def down
+    execute <<-SQL
+      CREATE TYPE import_status AS ENUM (
+        'pending',
+        'importing',
+        'complete',
+        'failed'
+      );
+    SQL
+
+    change_column :imports, :status, :import_status, using: 'status::import_status'
+    change_column_default :imports, :status, 'pending'
+  end
+end