Accessibility

[NyaomiDEV]

• [x] Initial implementation
• [x] High legibility font
• [ ] Investigate: are there other fonts people want to be included?
• [x] UI font scale
• [x] Custom accent color
• [ ] Toggle to enable/disable our Material 3 theming (especially useful on iOS devices)
• [ ] Chat font scale (needs chat to be done first)