feat: update backend package.json with TypeScript dependencies

backend/package.json

@@ -1,28 +1,24 @@
 {
-  "name": "pnger-backend",
-  "version": "1.0.0",
-  "description": "PNG editor backend API",
-  "main": "src/server.js",
+  "name": "png-editor-backend",
+  "version": "0.1.0",
+  "private": true,
+  "main": "dist/index.js",
   "scripts": {
-    "start": "node src/server.js",
-    "dev": "nodemon src/server.js",
-    "test": "echo \"No tests yet\" && exit 0"
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js"
   },
-  "keywords": ["png", "image", "editor", "resize"],
-  "author": "jason",
-  "license": "MIT",
   "dependencies": {
-    "express": "^4.18.2",
-    "multer": "^1.4.5-lts.1",
-    "sharp": "^0.33.2",
-    "cors": "^2.8.5",
-    "helmet": "^7.1.0",
-    "dotenv": "^16.4.1"
+    "express": "^4.19.0",
+    "multer": "^1.4.5",
+    "sharp": "^0.33.0",
+    "cors": "^2.8.5"
   },
   "devDependencies": {
-    "nodemon": "^3.0.3"
-  },
-  "engines": {
-    "node": ">=20.0.0"
+    "@types/express": "^4.17.21",
+    "@types/multer": "^1.4.7",
+    "@types/cors": "^2.8.17",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.6.0"
   }
 }