Run golangci-lint as part of CI

https://golangci-lint.run/usage/install/#ci-installation

.github/workflows/golangci-lint.yml

@@ -0,0 +1,18 @@
+name: golangci-lint
+on:
+  pull_request:
+permissions:
+  contents: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.19.3
+      - uses: actions/checkout@v3
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.50.1

.golangci.yaml

@@ -0,0 +1,5 @@
+linters:
+  enable:
+    - gofmt
+  disable:
+    - errcheck