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

TactilityC/Source/tt_hal_touch.cpp

@@ -0,0 +1,43 @@
+#include "tt_hal_touch.h"
+
+#include "Tactility/hal/Device.h"
+#include "Tactility/hal/touch/TouchDevice.h"
+#include "Tactility/hal/touch/TouchDriver.h"
+
+struct DriverWrapper {
+    std::shared_ptr<tt::hal::touch::TouchDriver> driver;
+    DriverWrapper(std::shared_ptr<tt::hal::touch::TouchDriver> driver) : driver(driver) {}
+};
+
+static std::shared_ptr<tt::hal::touch::TouchDevice> findValidTouchDevice(tt::hal::Device::Id id) {
+    auto device = tt::hal::findDevice(id);
+    if (device == nullptr || device->getType() != tt::hal::Device::Type::Touch) {
+        return nullptr;
+    }
+    return std::reinterpret_pointer_cast<tt::hal::touch::TouchDevice>(device);
+}
+
+extern "C" {
+
+bool tt_hal_touch_driver_supported(DeviceId id) {
+    auto touch = findValidTouchDevice(id);
+    return touch != nullptr && touch->supportsTouchDriver();
+}
+
+TouchDriverHandle tt_hal_touch_driver_alloc(DeviceId id) {
+    auto touch = findValidTouchDevice(id);
+    assert(touch->supportsTouchDriver());
+    return new DriverWrapper(touch->getTouchDriver());
+}
+
+void tt_hal_touch_driver_free(TouchDriverHandle handle) {
+    DriverWrapper* wrapper = static_cast<DriverWrapper*>(handle);
+    delete wrapper;
+}
+
+bool tt_hal_touch_driver_get_touched_points(TouchDriverHandle handle, uint16_t* x, uint16_t* y, uint16_t* _Nullable strength, uint8_t* pointCount, uint8_t maxPointCount) {
+    DriverWrapper* wrapper = static_cast<DriverWrapper*>(handle);
+    return wrapper->driver->getTouchedPoints(x, y, strength, pointCount, maxPointCount);
+}
+
+}