* add close proxy op
* Move to actual closing routine
* Fix e2e tests for CloseProxy
* Add warning on resource exhaustion
* Add CloseProxy to manual close
* retuen errors to `CloseProxy` callers
* Get rid of ugly statik
go1.16 introduced the embed package, it's the more graceful solution for embedding file into binary.
https://golang.org/pkg/embed/
* remove statik totally
* split go and static files in assets
token is the current token comparison, and oidc generates oidc token using client-credentials flow. in addition - add ping verification using the same method