Custom status feature (#16835)

* Create the system console setting and send to webapp

* MI-1145: Add custom status APIs

* MI-1145 Add slash commands to set and clear status

* Add validation for custom status API

* Trim custom status message

* Code refactoring

- Run gofmt

- Rename constants

* Remove sendUserUpdated webhook event

* Fix recent custom status length

* Update error conditions

* Disable /status slash command when config setting is off

* MI-1155: Create the feature flag for custom status APIs and slash commands

* Move recent custom statuses to user preferences (#7)

* Move recent custom statuses to user preferences

* Code refactoring and feedback changes

* Update slash command text and emoji regex

* Make the custom status feature flag off by default

* Update SetCustomStatus, handle recents not set better

* Update status codes

* Update slash command handling

* Add telementry settings

* Fix i18n order

* Revert "Fix i18n order"

This reverts commit 499f7eaca8180336f5bcca360cc0133365899e08.

* Update i18n strings

services/telemetry/telemetry.go

@@ -453,6 +453,7 @@ func (ts *TelemetryService) trackConfig() {
 		"restrict_private_channel_deletion":         *cfg.TeamSettings.DEPRECATED_DO_NOT_USE_RestrictPrivateChannelDeletion,
 		"enable_open_server":                        *cfg.TeamSettings.EnableOpenServer,
 		"enable_user_deactivation":                  *cfg.TeamSettings.EnableUserDeactivation,
+		"enable_custom_user_statuses":               *cfg.TeamSettings.EnableCustomUserStatuses,
 		"enable_custom_brand":                       *cfg.TeamSettings.EnableCustomBrand,
 		"restrict_direct_message":                   *cfg.TeamSettings.RestrictDirectMessage,
 		"max_notifications_per_channel":             *cfg.TeamSettings.MaxNotificationsPerChannel,