Tab5 audio, I2C improvements, UiDensity moved to lvgl-module and cleanup (#506)

- UiDensity moved to lvgl-module
- Deleted tt_hal and tt_hal_gpio (breaks apps, but will fix those right after merging)
- Added I2C 8 bit register operations
- Added device.properties to simulator
- Improved Tab5 hardware init, implement audio
- Add README.md to kernel

Devices/heltec-wifi-lora-32-v3/Source/Configuration.cpp

@@ -44,6 +44,5 @@ static std::vector<std::shared_ptr<tt::hal::Device>> createDevices() {
 
 extern const Configuration hardwareConfiguration = {
     .initBoot = initBoot,
-    .uiDensity = UiDensity::Compact,
     .createDevices = createDevices
 };

Devices/heltec-wifi-lora-32-v3/device.properties

@@ -26,3 +26,4 @@ infoMessage=Due to the small size of the screen, the icons don't render properly
 theme=Mono
 colorDepth=16
 uiScale=70
+uiDensity=compact