feat(db): add TypeORM migration workflow for center and guild

Fabric.Backend.Guild/src/data-source.ts

@@ -0,0 +1,16 @@
+import 'reflect-metadata';
+import { DataSource, DataSourceOptions } from 'typeorm';
+import { buildTypeOrmConfig } from './database.config';
+
+const cfg = buildTypeOrmConfig();
+
+const options: DataSourceOptions = {
+  ...(cfg as Record<string, unknown>),
+  type: 'mysql',
+  migrations: ['src/migrations/*.{ts,js}'],
+  synchronize: false,
+} as DataSourceOptions;
+
+export const AppDataSource = new DataSource(options);
+
+export default AppDataSource;