introducing problem matchers

lib/main.js

@@ -18,6 +18,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const exec = __importStar(require("@actions/exec"));
 const rustup = __importStar(require("./rustup"));
+const path = __importStar(require("path"));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
@@ -38,6 +39,8 @@ function run() {
                 ]);
                 yield exec.exec('rustup', ['default', version]);
             }
+            const matchersPath = path.join(__dirname, '..', '.github');
+            console.log(`##[add-matcher]${path.join(matchersPath, 'go.json')}`);
         }
         catch (error) {
             core.setFailed(error.message);