Refacor electron app and add migrations

electron/cqrs/commands/handlers/setCurrentUserId.ts

@@ -0,0 +1,9 @@
+import { DataSource } from 'typeorm';
+import { MetaEntity } from '../../../entities';
+import { SetCurrentUserIdCommand } from '../../types';
+
+export async function handleSetCurrentUserId(command: SetCurrentUserIdCommand, dataSource: DataSource): Promise<void> {
+  const repo = dataSource.getRepository(MetaEntity);
+
+  await repo.save({ key: 'currentUserId', value: command.payload.userId });
+}