MM-20644: Add users to teams as a SchemeAdmin based on a new configuration field on GroupTeams and GroupChannels records. (#13361)

* MM-20644: Add users to teams as a SchemeAdmin based on a new configuration field on GroupTeams and GroupChannels records.

* MM-20644: Adds SchemeAdmin to mapping of the GroupSyncable struct fields.

* MM-2064: Adds test to ensure SchemeAdmin field value is mapped.

* MM-20644: Adds missing index creation for fresh DBs.

* MM-20644: Duplicates UpdateMembersRole across Team and Channel stores. Adds tests.

* MM-20644: Fixes some old method name references.

* MM-20644: Moves variable declaration; removes Println statement.

* MM-20644: Use a SQL query instead of two to update Team and Channel members.

* MM-20644: Fixes tests; updates query.

* MM-20644: Fix permission check for patching a group syncable.

* MM-20644: Fixes test for change of permissions verification in group patch API request.

* MM-20644: Fix for ORM select vs insert.

* MM-20644: Linting fixes.

* MM-20644: Fixes some tests.

* MM-20644: Skips changing the role of guests.

* MM-20644: Added syncableID filtering

store/sqlstore/team_store.go

@@ -1080,6 +1080,28 @@ func (s SqlTeamStore) UserBelongsToTeams(userId string, teamIds []string) (bool,
 	return c > 0, nil
 }
 
+func (s SqlTeamStore) UpdateMembersRole(teamID string, userIDs []string) *model.AppError {
+	sql := fmt.Sprintf(`
+		UPDATE
+			TeamMembers
+		SET
+			SchemeAdmin = CASE WHEN UserId IN ('%s') THEN
+				TRUE
+			ELSE
+				FALSE
+			END
+		WHERE
+			TeamId = :TeamId
+			AND (SchemeGuest = false OR SchemeGuest IS NULL)
+			AND DeleteAt = 0`, strings.Join(userIDs, "', '"))
+
+	if _, err := s.GetMaster().Exec(sql, map[string]interface{}{"TeamId": teamID}); err != nil {
+		return model.NewAppError("SqlTeamStore.UpdateMembersRole", "store.update_error", nil, err.Error(), http.StatusInternalServerError)
+	}
+
+	return nil
+}
+
 func applyTeamMemberViewRestrictionsFilter(query sq.SelectBuilder, teamId string, restrictions *model.ViewUsersRestrictions) sq.SelectBuilder {
 	if restrictions == nil {
 		return query