[Management]Lookup list of Team member Github usernames

It is difficult to know which Github usernames map to student real names
- the whole point of this lookup table is to make it easier to assign users to tasks by their Github username
- this wiki list will also help us make sure that we get all team members added to the Github team,
- since we have already attempted to invite team members numerous times and have had 24 failed invites

There are some _Mentor only_ files on Google Drive that will be helpful in putting this lookup table together including:
* [RatPack 2023-2024 Registration Checklist](https://docs.google.com/spreadsheets/d/1p2v70a7casfqjhOmCVSg158Ym7sveuLphsJ9Qs7Lzus/edit?usp=drive_link)
* [2023-2024 Student Info Form (Responses)](https://docs.google.com/spreadsheets/d/1blxI0OPMxZKe_GsLu5ecP1yKDSFJkymUjMt0xeGaqRc/edit?usp=drive_link)
* [RatPack GitHub account registration (Responses)](https://docs.google.com/spreadsheets/d/1qPL6DClSnfUZAYbAp01db_3z__qarfNEPyjEGQW-39s/edit?usp=drive_link)