Setup of Base Infrastructure

Gather all components for the base infrastructure and set everything up. Nothing functional, just skeleton work.

- [x] remove default acme-bundle
- [x] add DomainBundle for the service layer
- [x] add RABundle for the management, prefix routes with /management
- [x] add SelfServiceBundle for the user self-service, prefix routes with /self-service
- [x] add onelogin/php-saml
- [x] adding OneLoginBridgeBundle, intended to bridge one-login