feat(package.json) add engines, packageManager, readme, qna

Author: gitgitWi

package.json

@@ -5,6 +5,8 @@
     "name": "위정훈 (gitgitWi)",
     "email": "rs1kflvx@duck.com"
   },
+  "readme": "https://github.com/gitgitWi/devcontainer-nodejs-template/blob/main/README.md",
+  "qna": "https://github.com/gitgitWi/devcontainer-nodejs-template/discussions",
   "workspaces": {
     "packages": [
       "packages/**"
@@ -17,6 +19,10 @@
     "devcontainer"
   ],
   "license": "MIT",
+  "engines": {
+    "node": ">=18"
+  },
+  "packageManager": "pnpm@7.30.1",
   "scripts": {
     "format": "prettier --write ./ --config .prettierrc",
     "clean": "turbo run clean && rm -rf node_modules && rm -rf .pnpm-store",