ci: add GitHub Actions workflow for tests and Codecov integration

Author: burakkoken

.github/workflows/tag.yaml

@@ -0,0 +1,27 @@
+name: Run Tests
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.24'
+
+      - name: Run test with coverage
+        run: go test ./... -coverprofile=coverage.out -covermode=atomic
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          flags: go-1.24