[Gekidou] Groups + group membership schema (#6251)

* First pass at adding groups to mobile

* Reverts back and updates the group vars

* Cleans tests

* Missing created/updated/deleted fields in types, many-many ref fix

* Adds to manager

* PR Feedback

* Failing test

* Move FK out of comment, add indexes

* updated docs/database/server artefacts

Co-authored-by: Avinash Lingaloo <avinashlng1080@gmail.com>

types/api/groups.d.ts

@@ -1,37 +1,31 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
-type SyncableType = 'team' | 'channel';
-type SyncablePatch = {
-    scheme_admin: boolean;
-    auto_add: boolean;
-};
 type Group = {
     id: string;
     name: string;
     display_name: string;
     description: string;
-    type: string;
+    source: string;
     remote_id: string;
+    member_count: number;
+    allow_reference: boolean;
     create_at: number;
     update_at: number;
     delete_at: number;
-    has_syncables: boolean;
-    member_count: number;
-    scheme_admin?: boolean;
-    allow_reference: boolean;
 };
+
 type GroupTeam = {
     team_id: string;
     team_display_name: string;
     team_type: string;
     group_id: string;
     auto_add: boolean;
-    scheme_admin?: boolean;
     create_at: number;
     delete_at: number;
     update_at: number;
-};
+}
+
 type GroupChannel = {
     channel_id: string;
     channel_display_name: string;
@@ -41,31 +35,11 @@ type GroupChannel = {
     team_type: string;
     group_id: string;
     auto_add: boolean;
-    scheme_admin?: boolean;
+    member_count?: number;
+    timezone_count?: number;
     create_at: number;
     delete_at: number;
     update_at: number;
-    member_count?: number;
-    timezone_count?: number;
-};
-type GroupSyncables = {
-    teams: GroupTeam[];
-    channels: GroupChannel[];
-};
-type GroupsState = {
-    syncables: {
-        [x: string]: GroupSyncables;
-    };
-    members: any;
-    groups: {
-        [x: string]: Group;
-    };
-    myGroups: {
-        [x: string]: Group;
-    };
-};
-type GroupSearchOpts = {
-    q: string;
-    is_linked?: boolean;
-    is_configured?: boolean;
-};
+}
+
+type GroupMembership = UserProfile[]