* feat: Add new simplified model for profile showcase preferences
Close#13688
* feat: Add new api for saving profile showcase preferences
* feat(ProfileShowase): Save action with the new backend
- Created JSON file according to new backend structure when saving.
- Updated `dirty state` to sync writable and movable models when position is changed to have a better internal models sync.
- Reenabled identity fields save.
Closes#13799
* feat(ProfileShowcase): Showcase limit values integration with backend
Updated showcase limits with values coming from backend.
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Co-authored-by: Noelia <noelia@status.im>
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