Migrate to stateless app.App (#17542)

* add request context

* move initialialization to server

* use app interface instead of global app functions

* remove app context from webconn

* cleanup

* remove duplicated services

* move context to separate package

* remove finalize init method and move content to NewServer function

* restart workers and schedulers after adding license for tests

* reflect review comments

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/options.go

@@ -95,6 +95,14 @@ func SetLogger(logger *mlog.Logger) Option {
 	}
 }
 
+func SkipPostInitializiation() Option {
+	return func(s *Server) error {
+		s.skipPostInit = true
+
+		return nil
+	}
+}
+
 type AppOption func(a *App)
 type AppOptionCreator func() []AppOption