feat: add fullstack TypeScript template with Docker support

- Created package.json for managing workspaces (frontend and backend)
- Added scripts for development, build, testing, and Docker operations
- Implemented kill-dev-processes.sh script to terminate development processes gracefully

backend/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "fullstack-typescript-template-backend",
+  "version": "1.0.0",
+  "description": "TypeScript Backend für Full Stack Template",
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only --inspect=0.0.0.0:9229 src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "test": "jest"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/cors": "^2.8.17",
+    "@types/express": "^4.17.21",
+    "@types/jest": "^29.5.12",
+    "@types/node": "^20.11.24",
+    "jest": "^29.7.0",
+    "ts-jest": "^29.1.2",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.3.3"
+  },
+  "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^4.18.3"
+  }
+}