Rework and update the team page

[TheFrenchGhosty]

• Add back @syeopite to the developers list
• Add the date of the first major contribution (usually a commit to the main repo) of the active "member"
• Update the roles of almost everyone
• Add a message that explains that invidious is community maintained
• TiA4f8R is now @AudricV
• Add @ChunkyProgrammer to the main contributors list
• Add the FreeTube team/Absidue to the main contributors list
• More !

Note: the role is still roughly based on what I know (reason why I'm the one with the most "role" since I know what I do), if you disagree with anything or think something is missing for you or someone else, feel free to post a comment. I also wrote that @SamantazFox is the "Lead developer" since... she kinda is, but again, if you disagree post a comment.

Result:

[SamantazFox]

I'd personally squash the "project managers" and "developers" section into a "Core team" one, idk. Given that we aren't a lot here, we all do multiple things.

[TheFrenchGhosty]

Superseeded by #73