Add experts for runtime lifecycle management

[kumaraditya303]

This includes things like python/cpython#102222 which currently does not has an obvious expert entry.

---

📚 Documentation preview 📚: https://cpython-devguide--1068.org.readthedocs.build/

[CAM-Gerlach]

I presume @ericsnowcurrently will want to formally approve this, if he hasn't somewhere already.

[ericsnowcurrently]

LGTM

I'd add @vstinner, @ncoghlan, and @zooba, but you might want to check with them first. Maybe just merge this and add them after?

[zooba]

I'm okay with being listed for this area. Probably never going to get to avoid it anyway 😆