feat: add test workflow

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  unit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          cache: true
+          go-version: 'stable'
+      - name: Run tests
+        run: go test ./...