core: setup: prefer mongo connection uri

packages/hydrooj/package.json

@@ -41,6 +41,7 @@
         "mime-types": "^2.1.35",
         "moment-timezone": "^0.5.45",
         "mongodb": "^5.9.2",
+        "mongodb-uri": "^0.9.7",
         "nanoid": "^5.0.6",
         "nodemailer": "^6.9.11",
         "notp": "^2.0.3",
@@ -66,6 +67,7 @@
         "@types/koa-static-cache": "^5.1.4",
         "@types/lodash": "^4.14.202",
         "@types/mime-types": "^2.1.4",
+        "@types/mongodb-uri": "^0",
         "@types/nodemailer": "^6.4.14",
         "@types/notp": "^2.0.5",
         "@types/saslprep": "^1.0.3",