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

api4/group.go

@@ -320,8 +320,9 @@ func patchGroupSyncable(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if !c.App.SessionHasPermissionTo(c.App.Session, model.PERMISSION_MANAGE_SYSTEM) {
-		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+	appErr := verifyLinkUnlinkPermission(c, syncableType, syncableID)
+	if appErr != nil {
+		c.Err = appErr
 		return
 	}
 
@@ -492,8 +493,8 @@ func getGroupsByChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	b, marshalErr := json.Marshal(struct {
-		Groups []*model.Group `json:"groups"`
-		Count  int            `json:"total_group_count"`
+		Groups []*model.GroupWithSchemeAdmin `json:"groups"`
+		Count  int                           `json:"total_group_count"`
 	}{
 		Groups: groups,
 		Count:  totalCount,
@@ -538,8 +539,8 @@ func getGroupsByTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	b, marshalErr := json.Marshal(struct {
-		Groups []*model.Group `json:"groups"`
-		Count  int            `json:"total_group_count"`
+		Groups []*model.GroupWithSchemeAdmin `json:"groups"`
+		Count  int                           `json:"total_group_count"`
 	}{
 		Groups: groups,
 		Count:  totalCount,