changing project struture according to moodle suggestions

.docker/nginx/default.conf

.gitignore

compose.yaml

symfony.dockerfile

web_app/.env.dev

web_app/.gitignore

web_app/bin/console

web_app/composer.json

web_app/config/bundles.php

web_app/config/packages/cache.yaml

web_app/config/packages/doctrine.yaml

web_app/config/packages/doctrine_migrations.yaml

web_app/config/packages/framework.yaml

web_app/config/packages/routing.yaml

web_app/config/packages/security.yaml

web_app/config/preload.php

web_app/config/routes.yaml

web_app/config/routes/framework.yaml

web_app/config/routes/security.yaml

web_app/config/services.yaml