ci: added build github workflow

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: Build checking
+
+on: pull_request
+
+jobs:
+  code:
+    name: Build checking
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14.x
+
+      - name: Install dependencies
+        uses: bahmutov/npm-install@v1
+
+      - name: Run TypeScript
+        run: npm run build --if-present