New board: Elecrow CrowPanel Avance 2.8" (#224)

- Added new board
- Extracted ST7789 driver and backlight PWM driver into separate subprojects
- Refactored T-Deck to use the shared driver modules
- Fix bug in WiFi service: searching for APs was broken

Boards/ElecrowCrowpanelAdvance28/Source/hal/CrowPanelTouch.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "Tactility/hal/touch/TouchDevice.h"
+#include <Tactility/TactilityCore.h>
+#include <esp_lcd_panel_io_interface.h>
+#include <esp_lcd_touch.h>
+
+class CrowPanelTouch : public tt::hal::touch::TouchDevice {
+
+private:
+
+    std::string getName() const final { return "GT911"; }
+    std::string getDescription() const final { return "I2C Touch Driver"; }
+
+    esp_lcd_panel_io_handle_t _Nullable ioHandle = nullptr;
+    esp_lcd_touch_handle_t _Nullable touchHandle = nullptr;
+    lv_indev_t* _Nullable deviceHandle = nullptr;
+    void cleanup();
+
+public:
+
+    bool start(lv_display_t* display) override;
+    bool stop() override;
+    lv_indev_t* _Nullable getLvglIndev() override { return deviceHandle; }
+};