[MVUX] Add analyzer to enforce immutability of entities

[dr1rrb]

What would you like to be added:

An analyzer that would warn if a mutable entity is used with a Feed or a State`

Why is this needed:

Error prompt https://github.com/unoplatform/uno/discussions/16581

For which Platform:

• [x] iOS
• [x] Android
• [x] WebAssembly
• [x] WebAssembly renders for Xamarin.Forms
• [x] Windows
• [ ] Build tasks