update golangci-lint config, add linting workflow #1

	name: lint-code
	on:
	push:
	branches:
	- main
	pull_request:
	types: [opened, edited, reopened, ready_for_review]
	pull_request_target:
	types: [opened, edited, reopened, ready_for_review]

	env:
	GO_VERSION: "~1.21"
	GO111MODULE: "on"

	jobs:
	run-golangci-lint:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: golangci-lint
	uses: golangci/golangci-lint-action@v5
	with:
	version: latest
	args: --timeout=5m --out-format=github-actions
	skip-save-cache: false

Provide feedback