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

docker-compose.yml

@@ -0,0 +1,47 @@
+# Docker Compose für Full Stack Application
+version: "3.8"
+
+services:
+  app:
+    image: ${APP_IMAGE:-fullstack-app:latest}
+    container_name: ${APP_CONTAINER_NAME:-fullstack-app}
+    restart: unless-stopped
+    environment:
+      - NODE_ENV=${NODE_ENV:-production}
+      - DATABASE_URL=${DATABASE_URL:-postgresql://postgres:postgres@postgres:5432/appdb}
+      - JWT_SECRET=${JWT_SECRET:-your-jwt-secret-change-this}
+    networks:
+      - app-network
+    depends_on:
+      postgres:
+        condition: service_healthy
+    ports:
+      - "${APP_PORT:-3000}:3000"
+
+  postgres:
+    image: postgres:15-alpine
+    container_name: ${POSTGRES_CONTAINER_NAME:-postgres-db}
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-appdb}
+      POSTGRES_USER: ${POSTGRES_USER:-postgres}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    networks:
+      - app-network
+    ports:
+      - "${POSTGRES_PORT:-5432}:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+networks:
+  app-network:
+    driver: bridge
+
+volumes:
+  postgres_data:
+    driver: local