Add lint configuration and GitHub action (#5)

Author: bluekeyes

.github/workflows/go.yml

@@ -0,0 +1,26 @@
+name: Go
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  verify:
+    name: Verify
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go 1.16
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.28
+
+      - name: Test
+        run: go test -v ./...

.gitignore

@@ -0,0 +1 @@
+/patch2pr

.golangci.yml

@@ -0,0 +1,26 @@
+run:
+  tests: false
+
+linters:
+  disable-all: true
+  enable:
+    - deadcode
+    - errcheck
+    - gofmt
+    - goimports
+    - golint
+    - govet
+    - ineffassign
+    - typecheck
+    - unconvert
+    - varcheck
+
+issues:
+  exclude-use-default: false
+  exclude-rules:
+    - path: cmd/patch2pr/
+      text: "should have( a package)? comment"
+
+linter-settings:
+  goimports:
+    local-prefixes: github.com/bluekeyes/patch2pr