[MM-22206] Add PATCH channel moderations (PUT /moderations/patch) (#13845)

* MM-22205 Add get channel moderations endpoint

* MM-22206 Add patch channel moderations endpoint

Add api tests for patch channel moderations

* MM-22205 Ensure ordered permissions returned and create struct ChannelModeratedRoles

* MM-22206 Use structs instead of map

* MM-22206 Add test cases for GetChannelModeratedPermissions

* MM-22206 Add tests for ChannelModeratedPermissionsChangedByPatch

* MM-22206 Use NewBool instead of defining booleans

* MM-22206 Tie Channel Mentions to Create Posts when building Channel Moderations

* Revert "MM-22206 Tie Channel Mentions to Create Posts when building Channel Moderations"

This reverts commit a0bfc95f1732955c5ef5fc3e4b05ea8ab954acea.

* MM-22206 Review changes

Modify GetSchemeRolesForChannel to return named variables
Change calls to SessionHasPermissionToChannel to SessionHasPermissionTo
Add a CreateChannelScheme method
Add a DeleteChannelScheme method
Move GetChannelModeratedPermissions to Role model

* Fix lint

* Add ChannelModeration methods to App interface

* MM-22206 Rename method to GetTeamSchemeChannelRoles

* MM-22206 Check CHANNEL_MODERATED_PERMISSIONS_MAP for existing permission before iterating through it

* Modify wording to higherScoped to match #13813

* MM-22206 Delete channel scheme between tests

* MM-22206 Fix tests

* Actually patch role

* MM-22206 Shadow declaration of err

model/permission.go

@@ -99,6 +99,9 @@ var PERMISSION_MANAGE_SYSTEM *Permission
 
 var ALL_PERMISSIONS []*Permission
 
+var CHANNEL_MODERATED_PERMISSIONS []string
+var CHANNEL_MODERATED_PERMISSIONS_MAP map[string]string
+
 func initializePermissions() {
 	PERMISSION_INVITE_USER = &Permission{
 		"invite_user",
@@ -641,6 +644,22 @@ func initializePermissions() {
 		PERMISSION_DEMOTE_TO_GUEST,
 		PERMISSION_USE_CHANNEL_MENTIONS,
 	}
+
+	CHANNEL_MODERATED_PERMISSIONS = []string{
+		PERMISSION_CREATE_POST.Id,
+		"create_reactions",
+		"manage_members",
+		PERMISSION_USE_CHANNEL_MENTIONS.Id,
+	}
+
+	CHANNEL_MODERATED_PERMISSIONS_MAP = map[string]string{
+		PERMISSION_CREATE_POST.Id:                    CHANNEL_MODERATED_PERMISSIONS[0],
+		PERMISSION_ADD_REACTION.Id:                   CHANNEL_MODERATED_PERMISSIONS[1],
+		PERMISSION_REMOVE_REACTION.Id:                CHANNEL_MODERATED_PERMISSIONS[1],
+		PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS.Id:  CHANNEL_MODERATED_PERMISSIONS[2],
+		PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS.Id: CHANNEL_MODERATED_PERMISSIONS[2],
+		PERMISSION_USE_CHANNEL_MENTIONS.Id:           CHANNEL_MODERATED_PERMISSIONS[3],
+	}
 }
 
 func init() {