[DB] forgejo migration v2: create the forgejo_sem_ver table

(cherry picked from commit 86b26436af)
(cherry picked from commit 479cba59ac)
(cherry picked from commit 4765f9a889)
(cherry picked from commit af771410bf)
(cherry picked from commit d1ea9305d8)
(cherry picked from commit f77e1bb7ab)

models/forgejo_migrations/migrate.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"os"
 
+	forgejo_v1_20 "code.gitea.io/gitea/models/forgejo_migrations/v1_20"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
@@ -34,7 +35,10 @@ func NewMigration(desc string, fn func(*xorm.Engine) error) *Migration {
 
 // This is a sequence of additional Forgejo migrations.
 // Add new migrations to the bottom of the list.
-var migrations = []*Migration{}
+var migrations = []*Migration{
+	// v1 -> v2
+	NewMigration("create the forgejo_sem_ver table", forgejo_v1_20.CreateSemVerTable),
+}
 
 // GetCurrentDBVersion returns the current Forgejo database version.
 func GetCurrentDBVersion(x *xorm.Engine) (int64, error) {

models/forgejo_migrations/v1_20/v2.go

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: MIT
+
+package forgejo_v1_20 //nolint:revive
+
+import (
+	"xorm.io/xorm"
+)
+
+func CreateSemVerTable(x *xorm.Engine) error {
+	type ForgejoSemVer struct {
+		Version string
+	}
+
+	return x.Sync(new(ForgejoSemVer))
+}