Add VS Code ts-loader problem matcher extension

Author: lumaxis

.vscode/extensions.json

@@ -2,6 +2,7 @@
 	// See http://go.microsoft.com/fwlink/?LinkId=827846
 	// for the documentation about the extensions.json format
 	"recommendations": [
-		"dbaeumer.vscode-eslint"
+		"dbaeumer.vscode-eslint",
+		"amodio.tsl-problem-matcher"
 	]
 }