Add check CI

.github/workflows/check.yml

@@ -0,0 +1,22 @@
+name: Check
+
+on:
+  pull_request:
+
+jobs:
+
+  check-relayer:
+    name: Release relayer
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Check
+        run: |
+          yarn install
+          yarn build
+