chore: setup build workflow

.github/workflows/build.yml

@@ -0,0 +1,21 @@
+name: Build
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out
+        uses: actions/checkout@v3
+      - name: Setup Node
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16
+      - name: Install
+        run: yarn
+      - name: Build
+        run: yarn build