Migrate TactilityC and LVGL functionality (#588)

lvgl-module

- Move and rename source and include files
- Fix bug with missing lvgl unlock
- New widgets: spinner, toolbar, sliderbox

TactilityC

- Removed tt_lock, tt_lvgl_\*

Modules/lvgl-module/include/lvgl/devices/keyboard.h

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <lvgl.h>
+
+#include <tactility/device.h>
+#include <tactility/error.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Creates an lv_indev_t bound to the given KEYBOARD_TYPE device and registers a read callback
+ * that polls the device through its KeyboardApi.
+ *
+ * @warning Caller must hold the LVGL lock (see lvgl_lock() in lvgl_module.h) — call this from
+ * LvglModuleConfig.on_start, or after calling lvgl_lock() explicitly.
+ *
+ * @param[in] device a device of type KEYBOARD_TYPE
+ * @param[in] display the display this indev should be associated with, or NULL to leave it unset
+ * @param[out] out_indev the created indev, valid only when ERROR_NONE is returned
+ * @retval ERROR_NONE on success
+ * @retval ERROR_INVALID_ARGUMENT if device or out_indev is NULL, or device is not of type KEYBOARD_TYPE
+ * @retval ERROR_OUT_OF_MEMORY if allocation failed
+ */
+error_t lvgl_keyboard_add(struct Device* device, lv_display_t* display, lv_indev_t** out_indev);
+
+/**
+ * @brief Removes an indev previously created with lvgl_keyboard_add().
+ * @warning Caller must hold the LVGL lock.
+ */
+void lvgl_keyboard_remove(lv_indev_t* indev);
+
+#ifdef __cplusplus
+}
+#endif