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

model/group_syncable.go

@@ -29,11 +29,12 @@ type GroupSyncable struct {
 	// TeamId.
 	SyncableId string `db:"-" json:"-"`
 
-	AutoAdd  bool              `json:"auto_add"`
-	CreateAt int64             `json:"create_at"`
-	DeleteAt int64             `json:"delete_at"`
-	UpdateAt int64             `json:"update_at"`
-	Type     GroupSyncableType `db:"-" json:"-"`
+	AutoAdd     bool              `json:"auto_add"`
+	SchemeAdmin bool              `json:"scheme_admin"`
+	CreateAt    int64             `json:"create_at"`
+	DeleteAt    int64             `json:"delete_at"`
+	UpdateAt    int64             `json:"update_at"`
+	Type        GroupSyncableType `db:"-" json:"-"`
 
 	// Values joined in from the associated team and/or channel
 	ChannelDisplayName string `db:"-" json:"-"`
@@ -123,13 +124,17 @@ func (syncable *GroupSyncable) MarshalJSON() ([]byte, error) {
 }
 
 type GroupSyncablePatch struct {
-	AutoAdd *bool `json:"auto_add"`
+	AutoAdd     *bool `json:"auto_add"`
+	SchemeAdmin *bool `json:"scheme_admin"`
 }
 
 func (syncable *GroupSyncable) Patch(patch *GroupSyncablePatch) {
 	if patch.AutoAdd != nil {
 		syncable.AutoAdd = *patch.AutoAdd
 	}
+	if patch.SchemeAdmin != nil {
+		syncable.SchemeAdmin = *patch.SchemeAdmin
+	}
 }
 
 type UserTeamIDPair struct {