move frontend in seperate repo

.env

.gitignore

assets/app.js

assets/bootstrap.js

assets/controllers.json

assets/controllers/hello_controller.js

assets/scripts/executeAction.js

assets/styles/app.scss

bin/console

composer.json

composer.lock

config/bundles.php

config/packages/cache.yaml

config/packages/doctrine.yaml

config/packages/doctrine_migrations.yaml

config/packages/framework.yaml

config/packages/routing.yaml

config/packages/security.yaml

config/packages/twig.yaml

config/packages/web_profiler.yaml