Contributor funding model refinements

:dizzy: Contributor funding model refinements!

:bust_in_silhouette: Contributor role responsibilities refinements - Roles - Catalyst Contributors

:scroll: Improved contributor proposal guide updated with more structured information, especially around the role details - Candidate Proposal Guide - Catalyst Contributors

:new: Four new example proposals to better show how you could apply to become a contributor:

Catalyst Contributor examples:
:one: Ada Lovelace - Example Proposal - Ada Lovelace - Catalyst Contributors
:two: Gerolamo Cardano - Example Proposal - Gerolamo Cardano - Catalyst Contributors

Cardano Contributor examples:
:three: Charles Babbage - Example Proposal - Charles Babbage - Cardano Contributors
:four: Leonardo Bonacci - Example Proposal - Leonardo Bonacci - Cardano Contributors

:face_with_monocle: These improvements should make it easier to write a contributor proposal and also easier for voters to compare candidates

:technologist: There is still a lot of work to do with creating contributor proposal standards in the future - though this is a small step forward towards that!