Split migrations folder (#21549)

There are too many files in `models/migrations` folder so that I split
them into sub folders.

models/migrations/v1_11/v105.go

@@ -0,0 +1,24 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package v1_11 //nolint
+
+import (
+	"xorm.io/xorm"
+)
+
+func AddTeamIncludesAllRepositories(x *xorm.Engine) error {
+	type Team struct {
+		ID                      int64 `xorm:"pk autoincr"`
+		IncludesAllRepositories bool  `xorm:"NOT NULL DEFAULT false"`
+	}
+
+	if err := x.Sync2(new(Team)); err != nil {
+		return err
+	}
+
+	_, err := x.Exec("UPDATE `team` SET `includes_all_repositories` = ? WHERE `name`=?",
+		true, "Owners")
+	return err
+}