add .golangci.yml #55

	name: build
	on:
	push:
	tags:
	- v*
	branches:
	- master
	- main
	pull_request:

	jobs:
	unit-tests:
	name: unit-tests
	strategy:
	matrix:
	go-version: [ 1.21.x, 1.22.x ] # support latest 2 major versions
	os: [ ubuntu-latest ]
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4

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

	- name: Download deps
	run: go mod download

	- name: Test
	run: make test

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v1
	with:
	file: ./coverage.txt
	fail_ci_if_error: true

	lint:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version-file: ./go.mod
	cache: true # caching and restoring go modules and build outputs

	- name: Check that 'go mod tidy' was called before commit
	run: go mod tidy && git diff --exit-code

	- name: golangci-lint
	uses: golangci/golangci-lint-action@v4
	with:
	version: v1.56
	skip-cache: true # cache/restore is done by actions/setup-go step

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