chore: initialize Gitea v1.27.2 fork

Includes direct password setup links in registration emails.

Assisted-by: Codex:GPT-5

services/versioned_migration/migration.go

@@ -0,0 +1,23 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package versioned_migration
+
+import (
+	"context"
+
+	"gitea.dev/models/db"
+	"gitea.dev/models/migrations"
+	"gitea.dev/modules/globallock"
+)
+
+func Migrate(ctx context.Context, x db.EngineMigration) error {
+	// only one instance can do the migration at the same time if there are multiple instances
+	release, err := globallock.Lock(ctx, "gitea_versioned_migration")
+	if err != nil {
+		return err
+	}
+	defer release()
+
+	return migrations.Migrate(ctx, x)
+}