feat: add github actions CI

.github/workflows/build.yml

@@ -0,0 +1,17 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16
+          cache: yarn
+
+      - run: yarn install --frozen-lockfile
+      - run: yarn build