refactor: migrate backend to TypeScript

pnpm-workspace.yaml

@@ -0,0 +1,26 @@
+packages:
+  - "backend"
+  - "frontend/web"
+  - "frontend/app"
+peerDependencyRules:
+  ignoreMissing:
+    - rollup
+    - webpack
+    - core-js
+allowedDeprecatedVersions:
+  sourcemap-codec: "*"
+  w3c-hr-time: "*"
+  stable: "*"
+allowBuilds:
+  '@parcel/watcher': true
+  '@prisma/client': true
+  '@prisma/engines': true
+  '@swc/core': true
+  '@tarojs/binding': true
+  '@tarojs/cli': true
+  core-js: true
+  core-js-pure: true
+  esbuild: true
+  prisma: true
+  typeit: true
+  vue-demi: true