Replace avy center logo in top header with Share button

[charlotteguard]

From Chris: we wanted to go with moving the share up to where the logo is currently. By doing this, we can facilitate the UX to share any part of the app (Obs/Weather/Saved/Zones/etc) while also keeping consistent branding and improving usability. This is my recommendation: https://www.figma.com/design/Bai2w7x0vUakL5WRjPGRg7/AVY-Native-App?node-id=2902-2527&m=dev

[rustynwac]

I think Chris Jones has some opinions on what to do here. Lets clear that with him before pushing forward