[MM-19948] Set version on module file and internal paths (#13186)

* [MM-19948] Set version on module file and internal paths

* Fixes after merge

* Fix i18n checker error

cmd/mattermost/main.go

@@ -6,13 +6,13 @@ package main
 import (
 	"os"
 
-	"github.com/mattermost/mattermost-server/cmd/mattermost/commands"
+	"github.com/mattermost/mattermost-server/v5/cmd/mattermost/commands"
 
 	// Plugins
-	_ "github.com/mattermost/mattermost-server/model/gitlab"
+	_ "github.com/mattermost/mattermost-server/v5/model/gitlab"
 
 	// Enterprise Imports
-	_ "github.com/mattermost/mattermost-server/imports"
+	_ "github.com/mattermost/mattermost-server/v5/imports"
 
 	// Enterprise Deps
 	_ "github.com/gorilla/handlers"