New kernel drivers and more (#560)

- Added kernel base drivers for: display, pointer (touch, mouse, etc.), keyboard, adc, power supply and backlight
- Implement new kernel driver modules: `st7789-module` and `gt911-module`
- Implement ESP32 ADC "oneshot" kernel driver
- Implement ESP32  backlight kernel driver with ledc API
- Implemented `battery-sense` driver that allows for voltage measurement and creates a power supply child device
- Updated github actions
- Updated flash scripts
- Fix for esp32 legacy driver conflict with ADC
- Created separate `lilygo-tdeck` and `lilygo-tdeck-plus` devices
- Created `lilygo-module` with LilyGO kernel drivers
- Fix for intermittent errors in build related to code generation of `devicetree.c`
- `lvgl-module` can now map kernel drivers onto LVGL devices
- Created `KernelDisplayApp` as a mirror of `HalDisplayApp` (formerly `DisplayApp`)
- Removed `struct` and `enum` prefix in a lot of kernel driver cpp source files
- `lilygo-tdeck` and `lilygo-tdeck-plus` are now fully relying on kernel drivers and don't use any of the old HAL

Platforms/platform-esp32/bindings/espressif,esp32-ledc-backlight.yaml

@@ -0,0 +1,29 @@
+description: ESP32 LEDC-backed PWM backlight
+
+compatible: "espressif,esp32-ledc-backlight"
+
+properties:
+  pin-backlight:
+    type: phandles
+    required: true
+    description: Backlight PWM output pin
+  frequency-hz:
+    type: int
+    default: 30000
+    description: PWM frequency in Hz
+  brightness-level-range:
+    type: values
+    default: [0, 255]
+    description: Inclusive [min,max] brightness range. The minimum value turns the backlight off.
+  brightness-default:
+    type: int
+    default: 200
+    description: Default brightness level, applied by set_brightness_default(). Should fall within brightness-level-range.
+  ledc-timer:
+    type: int
+    default: 0
+    description: LEDC timer index, defined by ledc_timer_t
+  ledc-channel:
+    type: int
+    default: 0
+    description: LEDC channel index, defined by ledc_channel_t