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/build.bat

@@ -0,0 +1,14 @@
+@echo off
+echo Building PC Monitor Client for Windows...
+
+set GOOS=windows
+set GOARCH=amd64
+
+go build -o pc-monitor-client.exe -ldflags="-s -w" .
+
+if %ERRORLEVEL% EQU 0 (
+    echo Build successful: pc-monitor-client.exe
+) else (
+    echo Build failed!
+    exit /b 1
+)