refactor: move into monorepo

apps/api/src/db.ts

@@ -0,0 +1,9 @@
+import { getDb } from "@money/shared/db";
+
+if (!process.env.ZERO_UPSTREAM_DB) {
+  throw new Error("ZERO_UPSTREAM_DB is not set");
+}
+
+export const db = getDb({
+  connectionString: process.env.ZERO_UPSTREAM_DB,
+});