[ADD] module: add new module real estate (Onboarding)

[yogietama]

Create Real Estate Module for onboarding program

[robodoo]

[delcourtfl]

Hello there ! Good work already, just added a few comments.

Also it seems your first commit has the wrong author set (most probably because your config was not properly set before pushing, might want to check into this as a general git exercise)

[delcourtfl]

Hello there ! Good work already, just a few comments.

(Might also need to check runbot style CI for some additional issues)

[delcourtfl]

Hello there ! Really good work, not much to say, you got the general idea for module development.

Also to end this part in a clean way you should squash your commits (using an interactive rebase) into:

• one for estate module
• one for estate_account module

(And don't forget to check the runbot style CI 👀)

[yogietama]

Hi @delcourtfl ,
I've already updated and improved the code to address potential performance issues. I also squashed the commits into the estate and estate_account modules. The Runbot style checks passed! :)

Thank you so much for checking my PR. I really appreciate you taking the time to review it and giving detailed feedback on the parts I missed.