build: Add golangci-lint to CI.

Author: skyzyx

.github/workflows/golangci-lint.yml

@@ -0,0 +1,44 @@
+---
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+
+name: Golangci-lint
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  golangci_job:
+    runs-on: ubuntu-latest
+    name: Scan for issues
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@1b05615854632b887b69ae1be8cbefe72d3ae423 # v2.6.0
+        with:
+          egress-policy: audit
+
+      - name: Checkout Source
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        with:
+          fetch-depth: 0
+
+      - name: Install Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.21'
+          cache: true
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest
+          only-new-issues: true
+          install-mode: goinstall