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

model/config.go

@@ -1857,6 +1857,7 @@ type TeamSettings struct {
 	EnableOpenServer                                          *bool    `access:"authentication"`
 	EnableUserDeactivation                                    *bool    `access:"experimental"`
 	RestrictCreationToDomains                                 *string  `access:"authentication"` // telemetry: none
+	EnableCustomUserStatuses                                  *bool    `access:"site"`
 	EnableCustomBrand                                         *bool    `access:"site"`
 	CustomBrandText                                           *string  `access:"site"`
 	CustomDescriptionText                                     *string  `access:"site"`
@@ -1910,6 +1911,10 @@ func (s *TeamSettings) SetDefaults() {
 		s.RestrictCreationToDomains = NewString("")
 	}
 
+	if s.EnableCustomUserStatuses == nil {
+		s.EnableCustomUserStatuses = NewBool(true)
+	}
+
 	if s.EnableCustomBrand == nil {
 		s.EnableCustomBrand = NewBool(false)
 	}