Add golangci-lint and fix linter errors #179

	name: "Unit/Coverage Tests"

	on: pull_request_target

	jobs:
	coverage:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Setup Go
	uses: actions/setup-go@v2
	with:
	go-version: "1.20"

	- name: Run unit tests and coverage test
	id: test-coverage
	run: \|
	go test -cover -v > output.txt

	- name: Transform output
	id: results
	if: always()
	run: \|
	CONTENT=$(cat output.txt)
	CONTENT="${CONTENT//'%'/'%25'}"
	CONTENT="${CONTENT//$'\n'/'%0A'}"
	CONTENT="${CONTENT//$'\r'/'%0D'}"
	echo "::set-output name=content::$CONTENT"

	- name: Add Comment
	uses: actions/github-script@v5
	if: always()
	with:
	script: \|
	const output = `### Unit Tests and Coverage
	<details><summary>Show Output</summary>

	\`\`\`
	${{ steps.results.outputs.content }}
	\`\`\`
	</details>

	Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\``;

	await github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: output
	})

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