github actions: add missing Go linter (#428)

.github/workflows/lint.yml

@@ -0,0 +1,20 @@
+name: Lint Go Code
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  golangci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: '1.21'
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest