tools: add GitHub Action to ping code owners

[mahmutovicr]

Migrates the ping code owners functionality from the GitHub bot to a GitHub Action, as part of removing the bot infrastructure.

Refs: #51236

[nodejs-github-bot]

Review requested:

• @nodejs/actions

[avivkeller]

Newline

[mahmutovicr]

Fixed in 9db79ba.

[avivkeller]

Still needs a newline

Suggested change

	run: node tools/actions/ping-owners.mjs
	run: node tools/actions/ping-owners.mjs

[avivkeller]

Still needs a newline

Suggested change

	run: node tools/actions/ping-owners.mjs
	run: node tools/actions/ping-owners.mjs

[avivkeller]

Suggested change

	}

[avivkeller]

Suggested change

	const changedFiles = await getChangedFiles();
	const codeownersContent = readFileSync('.github/CODEOWNERS', 'utf8');
	const owners = getOwnersForPaths(codeownersContent, changedFiles);
	if (owners.length !== 0) {
	await githubRequest(
	`/repos/${REPO_OWNER}/${REPO_NAME}/issues/${PR_NUMBER}/comments`,
	{
	method: 'POST',
	body: JSON.stringify({ body: getCommentBody(owners) }),
	},
	);
	}

[avivkeller]

Suggested change

	async function githubRequest(path, options = {}, retries = 3) {
	for (let attempt = 1; attempt <= retries; attempt++) {
	const response = await fetch(`https://api.github.com${path}`, {
	...options,
	headers: {
	'Authorization': `Bearer ${GITHUB_TOKEN}`,
	'Accept': 'application/vnd.github.v3+json',
	'X-GitHub-Api-Version': '2022-11-28',
	...options.headers,
	},
	});
	if (response.ok) {
	return response.json();
	}
	const retryable = response.status === 429 || response.status >= 500;
	if (!retryable || attempt === retries) {
	throw new Error(`GitHub API error: ${response.status} ${response.statusText}`);
	}
	await setTimeout(1000 * attempt);
	}
	}