Adds Docker setup and basic API endpoints

WHAT: Introduces Dockerfiles for development and production, Docker Compose configurations, a Makefile for common tasks, shell scripts for environment setup/teardown, a basic Express API with SQLite integration.
WHY: Enables easy setup and deployment of the application using Docker. Provides basic API endpoints for managing purchase items.
HOW:
- Creates `docker-compose.dev.yml` and `docker-compose.prod.yml` to define services and volumes.
- Introduces `Dockerfile.dev` and `Dockerfile.prod` to build container images with necessary dependencies.
- Adds `Makefile` with commands for building, running, and managing the application.
- Implements shell scripts for simplified Docker environment management.
- Sets up Express API with endpoints for CRUD operations on purchase items, using SQLite as the database.
- Uses `better-sqlite3` to connect and interact with the SQLite database.

server/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "dm-purchase-server",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "engines": {
+    "node": ">=18"
+  },
+  "scripts": {
+    "dev": "nodemon --watch src --exec ts-node src/index.ts",
+    "build": "tsc -b",
+    "start": "node dist/index.js",
+    "migrate": "ts-node src/migrate.ts"
+  },
+  "dependencies": {
+    "better-sqlite3": "^11.8.1",
+    "cors": "^2.8.5",
+    "express": "^4.21.2",
+    "zod": "^3.24.3"
+  },
+  "devDependencies": {
+    "@types/cors": "^2.8.17",
+    "@types/express": "^4.17.21",
+    "@types/node": "^22.14.1",
+    "nodemon": "^3.1.9",
+    "ts-node": "^10.9.2",
+    "typescript": "~5.7.2"
+  },
+  "pnpm": {
+    "allowedScripts": {
+      "better-sqlite3": true
+    }
+  }
+}
+
+