1、封装 usr_le_code 为静态库，并增加 Release 客户包自动生成工具

2、将 BLE 协议实现收敛为 libusr_le_code.a + 公开头文件，应用侧通过
usr_le_api / usr_le_product 对接；新增 package_release.py，按 version.txt
3、生成去除协议源码的客户交付包，开发工程继续保留完整源码。

apps/earphone/key_event_deal.c

@@ -34,8 +34,6 @@
 /* #define LOG_DUMP_ENABLE */
 #define LOG_CLI_ENABLE
 #include "debug.h"
-#include "bleproto.h"
-#include "bleproto_api.h"
 
 #define POWER_OFF_CNT       10
 
@@ -46,7 +44,6 @@ extern bool get_tws_sibling_connect_state(void);
 extern int bt_get_low_latency_mode();
 extern void bt_set_low_latency_mode(int enable);
 
-extern void usr_ble_adv_init();
 void audio_aec_pitch_change_ctrl();
 void audio_surround_voice_ctrl();
 extern void start_streamer_test(void);