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

client/go.mod

@@ -0,0 +1,8 @@
+module pc-monitor-client
+
+go 1.21
+
+require (
+	github.com/shirou/gopsutil/v3 v3.24.5
+	gopkg.in/yaml.v3 v3.0.1
+)