[Gekidou] Login entry point (#5568)

* Login entry point

* feedback review

* sort imports

* Fix model relations

* Handle when no current team or current channel has been selected

* Fix MFA unit test

* update prepareCommonSystemValues arguments

types/database/database.d.ts

@@ -16,6 +16,8 @@ import type System from '@typings/database/models/servers/system';
 
 import {DatabaseType} from './enums';
 
+export type WithDatabaseArgs = { database: Database }
+
 export type CreateServerDatabaseConfig = {
   dbName: string;
   dbType?: DatabaseType.DEFAULT | DatabaseType.SERVER;