Update working group definitions to allow for teams

[tim-schilling]

The primary changes are:

• Use "teams" phrase in README, but typically refer to them as working group (need input)
• Remove strict requirement for having a board liaison
• Allow for steering council only managed working groups/teams
• Adds a team template

This was an action item from the Accessibility team meeting on 2025-03-27

[sarahboyce]

Thank you for this! Have a couple of suggestions

[sarahboyce]

Maybe add a space for a team contact email

[tim-schilling]

Does the mailing list satisfy that from a few lines above?

[sarahboyce]

I'm not sure it should be an optional suggestion. I feel like their should be a way a SC/ DSF board member/Fellow can contact them privately

[tim-schilling]

I suspect with the chair and co-chair specified and having some communication mechanism identified here, there will be an implicit private method as well. If the team has a channel on slack, you can DM the chair/co-chair. Similar for the forum or discord. Does that suffice?

[thibaudcolas]

All looking great!

[jacobian]

I want to take a look at how this meshes with the formal powers granted to working groups by the bylaws and make sure this doesn't leave teams in a weird spot where they can't e.g. ask for budgets. I probably can't get to that for a bit over a week, but once I do I'll report back. More broadly though I'm totally in favor of this, makes a bunch of sense to me, so there's just the mechanistic bit I want to be sure of.