[Substratum] Samsung System Mo

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- Added Wide Nav.
- Added Narrow Nav.
- Added Home Left Nav (back and recents reversible by changing order in settings).
- Added Right Nav.
- Added Left Nav.
- Added Assistant Nav (left button; summons assistant).
- Added Volume Nav (left down; right up).
- Added Sleep Nav (left button; sleeps device).
- Added Search Nav (left button; searches on current app).
- Added Plain Nav (No Hide Dot / Keyboard Icon / Game Launcher Icon).
- Improved Pixel Nav Bar Quality.