move postgres to a separate package

packages/postgres/test/base.test.ts

@@ -0,0 +1,19 @@
+import { describe, it, expect } from "bun:test";
+
+import { PostgresConnection } from "../src";
+import { createConnection, cleanDatabase } from "./setup";
+
+describe(PostgresConnection, () => {
+   it("should connect to the database", async () => {
+      const connection = createConnection();
+      expect(await connection.ping()).toBe(true);
+   });
+
+   it("should clean the database", async () => {
+      const connection = createConnection();
+      await cleanDatabase(connection);
+
+      const tables = await connection.getIntrospector().getTables();
+      expect(tables).toEqual([]);
+   });
+});