Refactor LVGL code into kernel module (#472)

* **New Features**
  * Added a standalone LVGL module and enabled LVGL support in the simulator for richer local UI testing.

* **Refactor**
  * HAL and LVGL split into distinct modules; startup and device attach/detach flows reorganized for clearer lifecycle management.
  * Public APIs tightened with clearer nullability/documentation.

* **Bug Fixes**
  * More consistent LVGL start/stop and device attach/detach behavior for improved stability.

Modules/lvgl-module/CMakeLists.txt

@@ -0,0 +1,30 @@
+cmake_minimum_required(VERSION 3.20)
+
+file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
+
+if (DEFINED ENV{ESP_IDF_VERSION})
+
+    idf_component_register(
+        SRCS ${SOURCE_FILES}
+        INCLUDE_DIRS "Include/"
+        REQUIRES TactilityKernel lvgl esp_lvgl_port
+    )
+
+else ()
+
+    add_library(lvgl-module OBJECT)
+
+    target_sources(lvgl-module PRIVATE ${SOURCE_FILES})
+
+    target_include_directories(lvgl-module
+        PUBLIC Include/
+    )
+
+    target_link_libraries(lvgl-module PUBLIC
+        TactilityKernel
+        freertos_kernel
+        lvgl
+    )
+    
+endif ()
+