add typeORM initial files

database/data-source.ts

@@ -0,0 +1,21 @@
+import "reflect-metadata"
+import { DataSource } from "typeorm"
+import { Member } from "./entity/Member"
+import { System } from "./entity/System"
+import * as env from 'dotenv';
+
+env.config();
+
+export const AppDataSource = new DataSource({
+    type: "postgres",
+    host: "localhost",
+    port: 5432,
+    username: "postgres",
+    password: process.env.POSTGRES_PASSWORD,
+    database: "postgres",
+    synchronize: true,
+    logging: false,
+    entities: [Member, System],
+    migrations: [],
+    subscribers: [],
+})