feat(led): 添加键盘LED状态管理模块

- 新增keyboard_led_state_event事件用于处理USB/BLE HID输出报告中的LED状态
- 实现led_state_module模块，管理Num Lock指示灯和BLE状态指示灯
- 定义LED状态效果映射，包括熄灭、常亮、慢闪、快闪等效果
- 将hid_keymap_def.h从configuration目录移至inc目录
- 在BLE和USB HID模块中添加对输出报告LED掩码的解析和处理
- 配置DTS中的led_1为可用状态，更新CMakeLists.txt构建配置

inc/led_state_def.h

@@ -0,0 +1,39 @@
+#include "led_state.h"
+#include <caf/led_effect.h>
+
+/*
+ * 该文件仅被 led_state_module.c 包含一次，用于定义：
+ * 1) 逻辑 LED 到 CAF LED 实例编号映射；
+ * 2) 每个逻辑状态对应的 LED 效果。
+ */
+const struct {} led_state_def_include_once;
+
+/*
+ * CAF LED 实例编号来源于 DTS 中 status=okay 的 gpio-leds 顺序：
+ * - led_0 -> 0（Num Lock）
+ * - led_1 -> 1（BLE 状态）
+ */
+static const uint8_t led_map[LED_ID_COUNT] = {
+	[LED_ID_NUM_LOCK] = 0,
+	[LED_ID_BLE_STATE] = 1,
+};
+
+/* Num Lock 指示：灭=关闭，常亮=开启。 */
+static const struct led_effect led_num_lock_state_effect[LED_NUM_LOCK_STATE_COUNT] = {
+	[LED_NUM_LOCK_STATE_OFF] = LED_EFFECT_LED_OFF(),
+	[LED_NUM_LOCK_STATE_ON] = LED_EFFECT_LED_ON(LED_COLOR(255, 255, 255)),
+};
+
+/*
+ * BLE 指示灯策略：
+ * - OFF: 熄灭（USB 连接或 BLE 非活动模式）
+ * - WAIT_RECONNECT: 慢闪（1s toggle）
+ * - PAIRING: 快闪（0.5s toggle）
+ * - CONNECTED: 常亮
+ */
+static const struct led_effect led_ble_state_effect[LED_BLE_STATE_COUNT] = {
+	[LED_BLE_STATE_OFF] = LED_EFFECT_LED_OFF(),
+	[LED_BLE_STATE_WAIT_RECONNECT] = LED_EFFECT_LED_BLINK(1000, LED_COLOR(255, 255, 255)),
+	[LED_BLE_STATE_PAIRING] = LED_EFFECT_LED_BLINK(500, LED_COLOR(255, 255, 255)),
+	[LED_BLE_STATE_CONNECTED] = LED_EFFECT_LED_ON(LED_COLOR(255, 255, 255)),
+};