internal: move packages under this directory (#5836)

* Rename pkg -> internal

* Rename routes -> route

* Move route -> internal/route

* Rename models -> db

* Move db -> internal/db

* Fix route2 -> route

* Move cmd -> internal/cmd

* Bump version

internal/db/models_sqlite.go

@@ -0,0 +1,15 @@
+// +build sqlite
+
+// Copyright 2014 The Gogs 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 db
+
+import (
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func init() {
+	EnableSQLite3 = true
+}