add github actions build workflow (#32)

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: Build
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ci-${{ github.ref }}-build
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: "1.22"
+
+      - name: Display Go version
+        run: go version
+
+      - name: Build cada
+        run: make build