Guest accounts feature (#11428)

* MM-14139: Creating permissions for invite/promote/demote guests (#10778)

* MM-14139: Creating permissions for invite/promote/demote guests

* Fixing tests

* Adding invite guest api endpoint (#10792)

* Adding invite guest api endpoint

* Adding i18n

* Adding some tests

* WIP

* Migrating Token.Extra info to bigger size (2048)

* Fixing tests

* Adding client function for invite guests

* Adding send guests invites tests

* Renaming file from guest to guest_invite

* Adding Promote/Demote users from/to guest endpoints (#10791)

* Adding Promote/Demote users from/to guest endpoints

* Adding i18n translations

* Adding the client functions

* Using getQueryBuilder function

* Addressing PR review comments

* Adding default channels to users on promte from guest (#10851)

* Adding default channels to users on promte from guest

* Addressing PR review comments

* Fixing merge problems

* Sending websockets events on promote/demote (#11403)

* Sending websockets events on promote/demote

* Fixing merge problems

* Fixing govet shadowing problem

* Fixing feature branch tests

* Avoiding leaking users data through websockets for guest accounts (#11489)

* Avoiding leaking users data through websockets for guest accounts

* Adding tests and fixing code error

* Fixing i18n

* Allow to enable/disable guests and other extra config settings (#11481)

* Allow to enable/disable guests and other extra config settings

* Fixing tests and moving license and config validation to api level

* Update api4/role_test.go

Co-Authored-By: George Goldberg <george@gberg.me>

* Update api4/role_test.go

Co-Authored-By: George Goldberg <george@gberg.me>

* Fixing typo

* fixing tests

* Managing correctly the guest channel leave behavior (#11578)

* MM-15134: Removing guests from teams or system on leave channels if needed

* WIP

* No deactivating the guest user when leave the last team

* Adding a couple of tests

* Fixing shadow variables

* Fixing tests

* fixing tests

* fixing shadow variables

* Adding guest counts for channel stats (#11646)

* Adding guest counts for channel stats

* Adding tests

* Fixing tests

* Fixing guest domain restrictions (#11660)

* Adding needed migration for the database

* Fixing migration

model/license.go

@@ -59,6 +59,7 @@ type Features struct {
 	MessageExport             *bool `json:"message_export"`
 	CustomPermissionsSchemes  *bool `json:"custom_permissions_schemes"`
 	CustomTermsOfService      *bool `json:"custom_terms_of_service"`
+	GuestAccountsPermissions  *bool `json:"guest_accounts_permissions"`
 
 	// after we enabled more features we'll need to control them with this
 	FutureFeatures *bool `json:"future_features"`
@@ -81,6 +82,7 @@ func (f *Features) ToMap() map[string]interface{} {
 		"data_retention":              *f.DataRetention,
 		"message_export":              *f.MessageExport,
 		"custom_permissions_schemes":  *f.CustomPermissionsSchemes,
+		"guest_accounts_permissions":  *f.GuestAccountsPermissions,
 		"future":                      *f.FutureFeatures,
 	}
 }
@@ -162,6 +164,10 @@ func (f *Features) SetDefaults() {
 		f.CustomPermissionsSchemes = NewBool(*f.FutureFeatures)
 	}
 
+	if f.GuestAccountsPermissions == nil {
+		f.GuestAccountsPermissions = NewBool(*f.FutureFeatures)
+	}
+
 	if f.CustomTermsOfService == nil {
 		f.CustomTermsOfService = NewBool(*f.FutureFeatures)
 	}