tweak: add github workflows

.github/workflows/test.yml

@@ -0,0 +1,37 @@
+name: test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Node 18.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 20.x
+
+      - uses: actions/checkout@v2
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: "**/node_modules"
+          key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
+
+      - name: Install dependencies
+        run: pnpm i
+
+      - name: Build
+        run: pnpm build
+
+      - name: Run tests
+        run: pnpm test
+
+      - name: Run linter
+        run: pnpm lint