Add GitHub action

Author: tygern

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+name: Test
+
+on:
+  push:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: "go.mod"
+      - name: Run tests
+        run: go test ./...
+