refactor: migrate backend framework from Express to NestJS

tsconfig.json

@@ -1,19 +1,24 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
     "module": "commonjs",
-    "lib": ["ES2020"],
-    "outDir": "./dist",
-    "rootDir": "./",
-    "strict": true,
-    "esModuleInterop": true,
-    "skipLibCheck": true,
-    "forceConsistentCasingInFileNames": true,
-    "resolveJsonModule": true,
-    "moduleResolution": "node",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
     "allowSyntheticDefaultImports": true,
-    "types": ["node"]
+    "target": "ES2021",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "skipLibCheck": true,
+    "strictNullChecks": false,
+    "noImplicitAny": false,
+    "strictBindCallApply": false,
+    "forceConsistentCasingInFileNames": false,
+    "noFallthroughCasesInSwitch": false,
+    "esModuleInterop": true
   },
-  "include": ["**/*.ts"],
+  "include": ["src/**/*"],
   "exclude": ["node_modules", "dist"]
 }