Add asyncio experts (Kumar Aditya, Thomas Grainger, Guido)

[gvanrossum]

Will this tell a bot to assign us asyncio issues?

[hugovk]

No, this file is for humans, and you can also add an asterisk to indicate it's okay to assign such issues to you:

Unless a name is followed by a '*', you should never assign an issue to
that person. Names followed by a '*' may be assigned issues involving the
module or topic.

To be auto-assigned PRs, you can update the names the CODEOWNERS file, which will assign based on modified files:

https://github.com/python/cpython/blob/ad817cd5c44416da3752ebf9baf16d650703275c/.github/CODEOWNERS#L11

[ezio-melotti]

You can subscribe to labels to get notified, but I don't think we have any automation to assign issues anymore.
For PRs there is CODEOWNERS (you are already listed).

[ezio-melotti]

Suggested change

	asyncio 1st1, asvetlov, gvanrossum, graingert, kumaraditya303
	asyncio 1st1, asvetlov, gvanrossum*, graingert, kumaraditya303

You can an * after your name to indicate that you are fine with the issue being assigned to you.

[gvanrossum]

But I am not. I read everything and then decide.