add CLI command to register runner tokens (#23762)

This is a CLI command to generate new tokens for the runners to register
with

Fix https://github.com/go-gitea/gitea/issues/23643

---------

Co-authored-by: delvh <dev.lh@web.de>

routers/private/internal.go

@@ -77,6 +77,7 @@ func Routes() *web.Route {
 	r.Get("/manager/processes", Processes)
 	r.Post("/mail/send", SendEmail)
 	r.Post("/restore_repo", RestoreRepo)
+	r.Post("/actions/generate_actions_runner_token", GenerateActionsRunnerToken)
 
 	return r
 }