[v10.1.x] Auth: Add authed device tagging (#73156)

* Auth: Rename Sessions to Devices in counting (#72432)

* rename session to device

* rename session to device

* Auth: Add authed device tagging (#72442)

* add authed device tagging

* fix config

* implement feedback

* implement feedback

* add reverse untag behavior

* remove duplicate stat

* Update pkg/services/anonymous/anonimpl/impl.go

(cherry picked from commit 3353b1a8aa)

pkg/setting/setting.go

@@ -283,6 +283,8 @@ type Cfg struct {
 	AuthConfigUIAdminAccess bool
 	// TO REMOVE: Not documented & not supported. Remove with legacy handlers in 10.2
 	AuthBrokerEnabled bool
+	// TO REMOVE: Not documented & not supported. Remove in 10.3
+	TagAuthedDevices bool
 
 	// AWS Plugin Auth
 	AWSAllowedAuthProviders []string
@@ -1534,6 +1536,7 @@ func readAuthSettings(iniFile *ini.File, cfg *Cfg) (err error) {
 	// Do not use
 	cfg.AuthConfigUIAdminAccess = auth.Key("config_ui_admin_access").MustBool(false)
 	cfg.AuthBrokerEnabled = auth.Key("broker").MustBool(true)
+	cfg.TagAuthedDevices = auth.Key("tag_authed_devices").MustBool(true)
 
 	cfg.DisableLoginForm = auth.Key("disable_login_form").MustBool(false)
 	DisableSignoutMenu = auth.Key("disable_signout_menu").MustBool(false)