Merge develop into main (#303)

- `DisplayDevice` improvements related `DisplayDriver`
- Replaced incorrect usage of `spiBusHandle` with `spiHostDevice` in all SPI display devices
- Disabled `DisplayDriver` support for RGB displays for now
- Updated `GraphicsDemo` project for the above changes
- TactilityC improvements:
  - created `tt_hal_device_find()`
  - created `tt_hal_display_*`
  - created `tt_hal_touch_*`
  - created `tt_lvgl_*`
  - export `tt_app_*` calls

Boards/CYD-4848S040C/Source/hal/CydDisplay.h

@@ -1,7 +1,9 @@
 #pragma once
 
+#include <Tactility/Mutex.h>
+
 #include <EspLcdDisplay.h>
-#include<lvgl.h>
+#include <lvgl.h>
 
 class CydDisplay final : public EspLcdDisplay {
 
@@ -19,6 +21,8 @@ class CydDisplay final : public EspLcdDisplay {
 
 public:
 
+    CydDisplay() : EspLcdDisplay(std::make_shared<tt::Mutex>(tt::Mutex::Type::Recursive)) {}
+
     std::string getName() const override { return "ST7701S"; }
 
     std::string getDescription() const override { return "ST7701S RGB display"; }