[MM-49455] - Self-serve workspace deletion (#22200)

* [MM-49455] - Self-serve workspace deletion

* add subscription id to deletion request

* add server telemetry

* fix mocks

* feedback impl

einterfaces/cloud.go

@@ -47,4 +47,6 @@ type CloudInterface interface {
 	HandleLicenseChange() error
 
 	CheckCWSConnection(userId string) error
+
+	SelfServeDeleteWorkspace(userID string, deletionRequest *model.WorkspaceDeletionRequest) error
 }