feat(frpLogger): add real-time instance log streaming functionality

Implement cross-platform log streaming for frpc instances with support for Windows, systemd, and init.d systems. Includes WebSocket API endpoint for real-time log streaming, token validation, and instance ownership checks. Update README and API documentation to reflect new functionality.

The implementation handles:
- Platform-specific log collection (Windows Event Log, journalctl, log files)
- WebSocket-based real-time streaming
- Token validation and instance access control
- Log level parsing and formatting
- Historical log retrieval since service start

main.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"super-frpc/frpLogger"
 	"super-frpc/postLog"
 	"syscall"
 	"time"
@@ -77,6 +78,9 @@ func main() {
 		postLog.Warning(fmt.Sprintf("Failed to initialize frpc database: %v", err))
 	}
 
+	frpLogger.SetDatabase(db, frpcDB)
+	frpLogger.SetDebugMode(config.Debug)
+
 	_, err = GetConfig()
 	if err != nil {
 		postLog.Fatal(fmt.Sprintf("Failed to get config: %v", err))