chore: adds copy of migration file to prod

backend/package.json

@@ -6,7 +6,9 @@
     "dev": "tsx watch src/app.ts",
     "build": "tsc",
     "start": "node dist/app.js",
-    "migrate": "tsx src/db/migrate.ts"
+    "migrate": "tsx src/db/migrate.ts",
+    "migrate:prod": "node dist/db/migrate.js",
+    "migrate:prod": "node dist/db/migrate.js"
   },
   "dependencies": {
     "@family-budget/shared": "*",