more subteams under Collaborators

[Trott]

Although I hope the need for subteams is only temporary, I've added net as a subteam and will add http2 once we remove non-collaborators from that team. (The non-collaborators are not active as far as I can tell.) That will enable us to use CODEOWNERS for http2 pull requests. Refs: nodejs/node#34534

@nodejs/tsc @nodejs/community-committee

[mmarchini]

+1 as long as this is a temporary solution.

[gireeshpunathil]

+1

[mcollina]

+1

[ahmadawais]

+1

[bnb]

+1. If we're blocked on CODEOWNERS by subteams, perhaps it's worth investigating a more permanent solution - I think this is probably a valuable thing to have.

[mmarchini]

FYI this might not be needed once we land nodejs/github-bot#265 (which should be soon)

[Trott]

Done. Will be happy to undo it when the GitHub bot change lands. Until then, closing.