Trackball rewrite (#600)

- Implement generic trackball settings
- Refactor T-Deck trackball driver into generic driver at `Drivers/gpio-trackball-module`
- Automatically bind/unbind trackball devices with LVGL
- Automatically load settings for trackball devices on boot

Tactility/Source/lvgl/TrackballInit.cpp

@@ -0,0 +1,45 @@
+#include <lvgl/devices/trackball.h>
+#include <lvgl/devices/device_context.h>
+#include <lvgl/lvgl.h>
+#include <tactility/device.h>
+#include <tactility/drivers/trackball.h>
+
+#include <Tactility/Assets.h>
+#include <Tactility/settings/TrackballSettings.h>
+
+namespace tt::lvgl {
+
+static void initTrackball(lv_indev_t* indev, LvglTrackballSettings& settings) {
+    lv_indev_type_t type = lv_indev_get_type(indev);
+
+    void* driver_data = lv_indev_get_driver_data(indev);
+    if (!driver_data) {
+        return;
+    }
+
+    LvglDeviceContext* context = static_cast<LvglDeviceContext*>(driver_data);
+    if (!context->device) {
+        return;
+    }
+
+    const DeviceType* device_type = device_get_type(context->device);
+    if (device_type != &TRACKBALL_TYPE) {
+        return;
+    }
+
+    lvgl_trackball_set_settings(indev, &settings);
+    if (settings.mode == LVGL_TRACKBALL_MODE_POINTER) {
+        lvgl_trackball_set_cursor_image(indev, TT_ASSETS_UI_CURSOR);
+    }
+}
+
+void initTrackball() {
+    auto trackball_settings = settings::trackball::loadOrGetDefault();
+    lv_indev_t* indev = lv_indev_get_next(nullptr);
+    while (indev != nullptr) {
+        initTrackball(indev, trackball_settings);
+        indev = lv_indev_get_next(indev);
+    }
+}
+
+}