adds preliminary replit support

package.json

@@ -5,8 +5,12 @@
   "scripts": {
     "build": "tsc",
     "start:dev": "nodemon --watch src --exec ts-node src/server.ts",
+    "start:replit": "tsc && node build/server.js",
     "start": "node build/server.js"
   },
+  "engines": {
+    "node": ">=18.0.0"
+  },
   "author": "",
   "license": "MIT",
   "dependencies": {
@@ -14,6 +18,7 @@
     "dotenv": "^16.0.3",
     "express": "^4.18.2",
     "http-proxy-middleware": "^3.0.0-beta.1",
+    "pino": "^8.11.0",
     "pino-http": "^8.3.3",
     "showdown": "^2.1.0",
     "zlib": "^1.0.5"