* Smarter approach to the cookies
- Single maxCookieSize = 1400 constant with clear documentation
- Combined cookie storage for ~40-45% size reduction
- Backward compatible migration from legacy cookies
* Tuneup the code.
* Add sharded cache and prevention of CPU spikes / locks
* Add dynamic client registration with oidc provider
* Fix race condition introduced during the sharded cache implementation.
* Add page for traefikoidc.