Added GitHub Actions (#4)

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.24.2'
+    - name: Cache Go modules
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cache/go-build
+          ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+    - name: Download dependencies
+      run: go mod download
+    - name: Verify dependencies
+      run: go mod verify
+    - name: Run go vet
+      run: go vet ./...
+    - name: Run tests
+      run: go test -race -coverprofile=coverage.out -covermode=atomic ./...
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.24.2'
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v8
+      with:
+        version: latest
+        args: --timeout=5m