Enable golangci-lint github action

.github/workflows/golangci-lint.yml

@@ -0,0 +1,22 @@
+name: golangci-lint
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - master
+  pull_request:
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          # the version of golangci-lint.
+          version: v1.32.2
+
+          # show only new issues if it's a pull request.
+          only-new-issues: false