Enrich MessageParticipant when we learn about their first name / last name

[FelixMalfait]

I just tested the gmail import feature.

The scenario was the following:
(1) Charles had sent a calendar invite to me an Raphaël, in that invite Raphaël had no display name - only an email
(2) Raphaël sent me an email, he had a proper display name

Because (1) was imported before (2), Raphaël didn't have a full name in Twenty. This should be fixed.

[JorgeGraciaViveros]

Hi @FelixMalfait ! I am currently working in a group of 5 students from Carnegie Mellon taking a software engineering course and our final project is to contribute to an open-source repo. Our project has multiple checkpoints and will be due on December 8 (meaning our PR will take longer to open). Would it be possible for us to be assigned to this issue (or any issues that you think would be a good fit)? Thanks!

[FelixMalfait]

@bosiraphael what do you think? Does this make sense or is it a bad idea? (there's a risk of overwriting but I'm thinking it's okay to overwrite under some condition like it was createdBy Email integration + lastName is null)