Add golangci-lint GitHub Action workflow

Author: dplore

.github/workflows/golangci-lint.yaml

@@ -0,0 +1,5 @@
+- name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest
+          args: --new-from-rev=HEAD~1 # Only check changes from the last commit