* add anon sessions package
* add usage stat fn
* implement count for cache
* add anonservice to authn broker
* lint
* add tests for remote cache count
* move anon service to services
* wrap tagging in goroutine
* make func used
* reorganize auth usage stats
* usage stat privilege elevators
* stat count of modified role
* cfg related info
* add authn anon client
* kv store
* ensure anon enabled is collected even if client is not registered
* fix usage stats test
* API: Add reqSignedIn to router groups
* AuthN: Add fall through in context handler
* AuthN: Add IsAnonymous field
* AuthN: add priority to context aware clients
* ContextHandler: Add comment
* AuthN: Add a simple priority queue
* AuthN: Add Name to client interface
* AuthN: register clients with function
* AuthN: update mock and fake to implement interface
* AuthN: rewrite test without reflection
* AuthN: add comment
* AuthN: fix queue insert
* AuthN: rewrite tests
* AuthN: make the queue generic so we can reuse it for hooks
* ContextHandler: Add fixme for auth headers
* AuthN: remove unused variable
* AuthN: use multierror
* AuthN: write proper tests for queue
* AuthN: Add queue item that can store the value and priority
Co-authored-by: Jo <joao.guerreiro@grafana.com>
* add user sync
* add org user sync
* add client params
* merge remaining conflicts
* remove change to report.go
* update comments
* add basic tests for user ID population
* add tests for auth ID find
* add tests for user sync create and update
* add tests for orgsync
* satisfy lint
* add userID guards
* AuthN: Add functionallity to test if auth client should be used
* AuthN: Add bolierplate client for api keys and register it
* AuthN: Add tests for api key client
* Inject service
* AuthN: Update client names
* ContextHandler: Set authn service
* AuthN: Implement authentication for api key client
* ContextHandler: Use authn service for api keys if flag is enabled
* AuthN: refactor authentication method to return additional value to
indicate if client could perform authentication
* update prefixes
* Add namespaced id to identity
* AuthN: Expand the Identity struct to include required fields from signed
in user
* Add error for disabled service account
* Add function to write error response based on errutil.Error
* Add error to log
* Return errors based on errutil.Error
* pass error
* update log message
* Fix namespaced ids
* Add tests
* Lint
