feat: add onAny and onError methods from @octokit/webhooks

[wolfy1339]

No description provided.

[request-info]

Thanks for opening this, but we'd appreciate a little more information. Could you update it with more details?

[gr2m]

Can you update the docs

probot/docs/webhooks.md

Lines 43 to 51 in 2c97c99

	You can also use `app.webhooks.onAny()` to listen for any event that your app is subscribed to:
	```js
	module.exports = (app) => {
	app.webhooks.onAny(async (context) => {
	context.log.info({ event: context.name, action: context.payload.action });
	});
	};
	```

[github-actions]

🎉 This PR is included in version 11.1.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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