GitHub Actions workflow to run golangci-lint added

This workflow derives from the recommendation [1] to run a separate
linting job in parallel with other jobs (i.e. tests).

Only new issues will be included until the rest of the repository has
been brought up to date with the new linting rules.

[1]: https://github.com/golangci/golangci-lint-action?tab=readme-ov-file#how-to-use

Author: danielwhite

.github/workflows/golangci-lint.yml

@@ -0,0 +1,31 @@
+name: Lint
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v8
+        with:
+          version: v2.1
+          # Show only new issues until the entire repository
+          # is compliant with the new linting rules.
+          only-new-issues: true