add global build script

package.json

@@ -16,5 +16,9 @@
 		"prettier": "^3.2.5",
 		"typescript": "^5.4.4"
 	},
-	"packageManager": "yarn@4.1.1"
+	"packageManager": "yarn@4.1.1",
+	"scripts": {
+		"build": "yarn && cd nodejs-rfb && yarn && yarn build && cd ../shared && yarn build && cd ../qemu && yarn build && cd ../cvmts && yarn build",
+		"serve": "node cvmts/dist/index.js"
+	}
 }