Graphics & rendering
- Implement `binfont-module` to generate bitmap fonts on the device itself
- Remove lodepng support from LVGL library and create `Modules/lodepng-module` to make the feature re-usable in non-LVGL apps too. Add binding functions for LVGL support.
- Implement large icons for boot screen (Tactility and USB logos)
- Remove unused asset files in `Data/`
Boot
- Split up `Tactility.cpp` and its `run()` function into various `Init*.cpp` files.
- Re-implement `Boot.cpp` app as non-LVGL app
- Boot app now has a `BootSequence.cpp` for the init code.
- LVGL is now started when the Boot app finishes
- Move more init logic into Boot app
BLE
- Don't allocate scan result buffers unless BLE is on
- Allocate scan results in external memory if possible
UX & UI
- USB Settings app: remove border from the button container