PR Feature/HDX-9830 3w and funding

[alexandru-m-g]

Contains:

• adapted 3w (operational presence)
• new funding enpoint + logic
• refactoring pydantic models with the set_admin1_admin2_null() function
• other small refactorings

[IanHopkinson]

This looks good to me

I like the HapiModelWithAdmins refactoring - I was thinking about something like this myself (but didn't know how to do it)

I'm assuming you have done the visual check of the endpoints on the docs page.

I'm struggling to keep up with your refactorings in my population branch! I

[alexandru-m-g]

@IanHopkinson , thanks for the review. I think you can avoid the refactorings in your branch (if you can avoid pulling the changes in) and I can deal with them when I merge your changes.