Add relay server for remote HTTPS access

Node.js/TypeScript relay server that enables remote access to MacroPad:
- WebSocket-based communication between desktop and relay
- Password authentication with bcrypt hashing
- Session management with consistent IDs
- REST API proxying to desktop app
- Web client WebSocket relay
- Login page and PWA-ready app page
- Designed for cloud-node-container deployment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

macropad-relay/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "macropad-relay",
+  "version": "1.0.0",
+  "description": "Relay server for MacroPad remote access",
+  "main": "index.js",
+  "scripts": {
+    "dev": "nodemon --exec ts-node src/index.ts",
+    "build": "tsc && cp -r public dist/",
+    "start": "node index.js",
+    "clean": "rm -rf dist"
+  },
+  "keywords": ["macropad", "relay", "websocket", "proxy"],
+  "author": "ShadowDao",
+  "license": "MIT",
+  "dependencies": {
+    "bcrypt": "^5.1.1",
+    "cors": "^2.8.5",
+    "dotenv": "^16.3.1",
+    "express": "^4.18.2",
+    "express-rate-limit": "^7.1.5",
+    "helmet": "^7.1.0",
+    "uuid": "^9.0.0",
+    "winston": "^3.11.0",
+    "ws": "^8.14.2"
+  },
+  "devDependencies": {
+    "@types/bcrypt": "^5.0.2",
+    "@types/cors": "^2.8.16",
+    "@types/express": "^4.17.21",
+    "@types/uuid": "^9.0.6",
+    "@types/ws": "^8.5.9",
+    "nodemon": "^3.0.2",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.3.2"
+  }
+}