[MM-43649] - Ability for end users to notify admin to upgrade workspace (#20338)

* [MM-43649] - Ability for end users to notify admin to upgrade workspace

* add test case

* move code to app layer

* feedback impl

* feedback impl-1

* feedback impl

* simplify logic

* fix typo and lint

* fix app layers

* Use a single critical section for users notified admin (#20488)

* Use a single critical section for users notifying admin

* change persistence mechanism

* add more tests

* change bot message

* fix translations

* update logic to notify once within cooloff period

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Nathaniel Allred <neallred@protonmail.com>

model/preference.go

@@ -59,6 +59,7 @@ const (
 	PreferenceEmailIntervalFifteenAsSeconds  = "900"
 	PreferenceEmailIntervalHour              = "hour"
 	PreferenceEmailIntervalHourAsSeconds     = "3600"
+	PreferenceCloudUserEphemeralInfo         = "cloud_user_ephemeral_info"
 )
 
 type Preference struct {