github/workflows: add linting workflow

.github/workflows/lint.yaml

@@ -0,0 +1,27 @@
+name: Golangci lint
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+permissions:
+  contents: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.21
+        env:
+          GOFLAGS: -mod=mod
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest
+          skip-pkg-cache: true