feat: add support for MCP service and CLI subcommands

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>

cmd/main.go

@@ -1,9 +1,15 @@
 package main
 
 import (
+	"os"
+
 	"kvm"
 )
 
 func main() {
+	if len(os.Args) > 1 && os.Args[1] == "cli" {
+		kvm.RunCLI(os.Args[2:])
+		return
+	}
 	kvm.Main()
 }