feat: init pc-monitor project

- Client: Go-based Windows hardware monitoring (CPU, GPU, memory, disk, network, power)
- Server: Go + Gin + SQLite backend with REST API
- Frontend: Vue 3 + Element Plus dashboard
- Docker deployment support
- Windows service installation script

server/config.yaml

@@ -0,0 +1,9 @@
+server:
+  addr: ":8080"
+
+database:
+  path: "./data/monitor.db"
+  retention_days: 30
+
+auth:
+  admin_password: "admin123"