CI: Add golangci-lint

Author: andygrunwald

.github/workflows/testing.yml

@@ -88,4 +88,25 @@ jobs:
         with:
           version: "2025.1.1"
           install-go: false
-          cache-key: ${{ matrix.go-version }}-${{ matrix.os }}
+          cache-key: ${{ matrix.go-version }}-${{ matrix.os }}
+
+  golangci-lint:
+    name: golangci-lint
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [ '1.23', '1.24' ]
+        os: [ 'windows-latest', 'ubuntu-latest', 'macOS-latest' ]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Go ${{ matrix.go-version }}
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: Run golangci-lint (Go ${{ matrix.go }})
+        uses: golangci/golangci-lint-action@v7
+        with:
+          version: v2.0

.golangci.yml

@@ -0,0 +1,20 @@
+version: "2"
+linters:
+  # Default set of linters.
+  # The value can be: `standard`, `all`, `none`, or `fast`.
+  default: standard
+  # Disable specific linter
+  # https://golangci-lint.run/usage/linters/#disabled-by-default
+  enable:
+    - errcheck
+    - govet
+    - ineffassign
+    - unused
+    - misspell
+  disable:
+    - staticcheck
+run:
+  # Timeout for total work, e.g. 30s, 5m, 5m30s.
+  # If the value is lower or equal to 0, the timeout is disabled.
+  # Default: 0 (disabled)
+  timeout: 5m