Madara <> Celestia

Presentation is here:
https://app.pitch.com/app/presentation/82d36efd-f5f4-43cd-b2a8-b058dfa5db37/ee7db963-0ed1-45fe-9d6a-4a15c71da6d5 

Code is available here:
https://github.com/mathieu-chauvin/madara/tree/da-celestia

Currently in the da-celestia branch. If you wish to (most) of our changes to the source code, here is a PR view of those changes:

https://github.com/keep-starknet-strange/madara/pull/881/files