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

Drivers/lilygo-module/bindings/lilygo,tdeck-keyboard-backlight.yaml

@@ -0,0 +1,13 @@
+description: LilyGO T-Deck onboard keyboard backlight controller
+
+include: ["i2c-device.yaml"]
+
+compatible: "lilygo,tdeck-keyboard-backlight"
+
+bus: i2c
+
+properties:
+  brightness-default:
+    type: int
+    default: 127
+    description: Default brightness level, applied on start and by set_brightness_default(). Range 0-255.

Drivers/lilygo-module/bindings/lilygo,tdeck-keyboard.yaml

@@ -0,0 +1,7 @@
+description: LilyGO T-Deck onboard keyboard controller
+
+include: ["i2c-device.yaml"]
+
+compatible: "lilygo,tdeck-keyboard"
+
+bus: i2c

Drivers/lilygo-module/bindings/lilygo,tdeck-trackball.yaml

@@ -0,0 +1,25 @@
+description: LilyGO T-Deck 5-way GPIO trackball (4 directions + click button)
+
+compatible: "lilygo,tdeck-trackball"
+
+properties:
+  pin-right:
+    type: phandles
+    required: true
+    description: Right-direction GPIO pin
+  pin-up:
+    type: phandles
+    required: true
+    description: Up-direction GPIO pin
+  pin-left:
+    type: phandles
+    required: true
+    description: Left-direction GPIO pin
+  pin-down:
+    type: phandles
+    required: true
+    description: Down-direction GPIO pin
+  pin-click:
+    type: phandles
+    required: true
+    description: Click button GPIO pin