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/include/lilygo/drivers/trackball.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include <lvgl.h>
+
+namespace trackball {
+
+/**
+ * @brief Trackball operating mode
+ */
+enum class Mode {
+    Encoder,  // Navigation via enc_diff (scroll wheel behavior)
+    Pointer   // Mouse cursor via point.x/y
+};
+
+/**
+ * @brief Initialize trackball as an LVGL input device, backed by the kernel tdeck_trackball driver.
+ * @return LVGL input device pointer, or nullptr if the kernel device isn't found/started
+ */
+lv_indev_t* init();
+
+/**
+ * @brief Deinitialize trackball
+ */
+void deinit();
+
+/**
+ * @brief Set encoder mode sensitivity
+ * @param sensitivity Steps per trackball tick (1-10, default: 1)
+ */
+void setEncoderSensitivity(uint8_t sensitivity);
+
+/**
+ * @brief Set pointer mode sensitivity
+ * @param sensitivity Pixels per trackball tick (1-10, default: 10)
+ */
+void setPointerSensitivity(uint8_t sensitivity);
+
+/**
+ * @brief Enable or disable trackball input processing
+ * @param enabled Boolean value to enable or disable
+ */
+void setEnabled(bool enabled);
+
+/**
+ * @brief Set trackball operating mode
+ * @param mode Encoder or Pointer mode
+ */
+void setMode(Mode mode);
+
+/**
+ * @brief Get current trackball operating mode
+ * @return Current mode
+ */
+Mode getMode();
+
+}