* identity: add support for verifying access and identity tokens
* allow overriding with policy option
* authenticate: add verify endpoints
* wip
* implement session creation
* add verify test
* implement idp token login
* fix tests
* add pr permission
* make session ids route-specific
* rename method
* add test
* add access token test
* test for newUserFromIDPClaims
* more tests
* make the session id per-idp
* use type for
* add test
* remove nil checks
* update tracing config definitions
* new tracing system
* performance improvements
* only configure tracing in envoy if it is enabled in pomerium
* [tracing] refactor to use custom extension for trace id editing (#5420)
refactor to use custom extension for trace id editing
* set default tracing sample rate to 1.0
* fix proxy service http middleware
* improve some existing auth related traces
* test fixes
* bump envoyproxy/go-control-plane
* code cleanup
* test fixes
* Fix missing spans for well-known endpoints
* import extension apis from pomerium/envoy-custom
