feat: 添加设置模块和相关UI功能

- 新增settings_module.c实现设置菜单逻辑，包括蓝牙配对槽位管理和主题颜色选择
- 添加settings_mode_event.h/.c和settings_view_event.h/.c事件定义用于设置模式切换
- 创建settings_ui.h定义设置界面状态结构体和页面枚举
- 修改display_module.c集成设置UI显示逻辑，支持主界面和设置界面切换
- 在keyboard_core_module.c中添加设置活动状态检查，避免设置模式下键盘输入冲突
- 更新CMakeLists.txt包含新的源文件：settings_module.c、ui_settings.c及新事件文件
- 修改prj.conf调整LVGL内存池大小从16KB到32KB以支持更复杂UI渲染
- 移除BLE配对擦除相关配置选项并增加长按检测时间到1500毫秒
- 更新ui_main.c添加可见性控制函数用于界面切换

src/events/settings_view_event.c

@@ -0,0 +1,59 @@
+#include "settings_view_event.h"
+
+static const char *page_name(enum settings_ui_page page)
+{
+	switch (page) {
+	case SETTINGS_UI_PAGE_ROOT:
+		return "root";
+	case SETTINGS_UI_PAGE_BLE:
+		return "ble";
+	case SETTINGS_UI_PAGE_THEME:
+		return "theme";
+	default:
+		return "?";
+	}
+}
+
+static void log_settings_view_event(const struct app_event_header *aeh)
+{
+	const struct settings_view_event *event =
+		cast_settings_view_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(
+		aeh,
+		"active:%u page:%s root_sel:%u ble_sel:%u theme_sel:%u slot:%u",
+		event->state.active, page_name(event->state.page),
+		event->state.root_selected, event->state.ble_selected,
+		event->state.theme_selected, event->state.active_ble_slot);
+}
+
+static void profile_settings_view_event(struct log_event_buf *buf,
+					const struct app_event_header *aeh)
+{
+	const struct settings_view_event *event =
+		cast_settings_view_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->state.active ? 1U : 0U);
+	nrf_profiler_log_encode_uint8(buf, event->state.page);
+	nrf_profiler_log_encode_uint8(buf, event->state.root_selected);
+	nrf_profiler_log_encode_uint8(buf, event->state.ble_selected);
+	nrf_profiler_log_encode_uint8(buf, event->state.theme_selected);
+	nrf_profiler_log_encode_uint8(buf, event->state.active_ble_slot);
+}
+
+APP_EVENT_INFO_DEFINE(settings_view_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("active", "page", "root_selected", "ble_selected",
+			     "theme_selected", "active_ble_slot"),
+		      profile_settings_view_event);
+
+APP_EVENT_TYPE_DEFINE(settings_view_event,
+		      log_settings_view_event,
+		      &settings_view_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));