feat: initialize ingest-api with Koa and telemetry handling

- Create ingest-api with Koa framework for handling device telemetry.
- Implement telemetry ingestion with MongoDB, Redis, and PostgreSQL.
- Add API endpoints for telemetry and health checks.
- Set up testing with Vitest for unit and end-to-end tests.
- Configure Prettier and ESLint for code formatting and linting.
- Create Docker Compose setup for PostgreSQL, MongoDB, and Redis services.
- Establish contracts package for shared Zod schemas and TypeScript types.
- Implement React frontend with device status and greeting functionalities.
- Add VS Code setup documentation for onboarding developers.

docker-compose.yml

@@ -0,0 +1,36 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: app
+      POSTGRES_PASSWORD: app
+      POSTGRES_DB: app
+    ports:
+      - '5432:5432'
+    volumes:
+      - ./infra/postgres/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U app -d app']
+      interval: 3s
+      timeout: 5s
+      retries: 20
+
+  mongo:
+    image: mongo:7
+    ports:
+      - '27017:27017'
+    healthcheck:
+      test: ['CMD', 'mongosh', '--quiet', '--eval', "db.adminCommand('ping').ok"]
+      interval: 5s
+      timeout: 5s
+      retries: 20
+
+  redis:
+    image: redis:7-alpine
+    ports:
+      - '6379:6379'
+    healthcheck:
+      test: ['CMD', 'redis-cli', 'ping']
+      interval: 3s
+      timeout: 5s
+      retries: 20