WIP: Feature: Rapid CDN
Design:
- provide user friendly approach
- fast frontend connection parameter provision
 - asynchronous frontend creation with informative page
 - good defaults:
- https-only
 - full caching
 - backend checks
 
 - websocket support
 
 - have compatibility layer for custom-personal from caddy-frontend
- full for scenarios like massive automatic hosting, forever due to return parameters
 - encourage migration for parameters like 
type 
 - haproxy only (!830 (closed))
 - cluster based CA (!843 (closed))