重构代码的架构设计，增加测试单元，提高代码可靠性

tests/test_p1_menu.c

@@ -0,0 +1,28 @@
+#include <string.h>
+
+#include "test_common.h"
+#include "../src/Drv/menu.c"
+
+int main(void)
+{
+    uint8_t menu_num[4] = {0};
+    tagPMenuItem first[4] = {0};
+    tagPMenuItem index[4] = {0};
+    uint8_t max_len;
+
+    Menu_Init();
+    ASSERT_TRUE(g_tMenuCtrl.by0LevelNum > 0);
+    ASSERT_TRUE(g_tMenuCtrl.ptHead != NULL);
+    ASSERT_TRUE(g_tMenuCtrl.ptCurrent != NULL);
+
+    ASSERT_EQ_INT(3, utf8_len_cal((uint8_t*)"ABC"));
+    ASSERT_EQ_INT(2, utf8_len_cal((uint8_t*)"你"));
+
+    first[0] = g_tMenuCtrl.ptHead;
+    index[0] = g_tMenuCtrl.ptHead;
+    max_len = Menu_charLenCal(0, menu_num, first, index);
+    ASSERT_TRUE(max_len > 0);
+    ASSERT_TRUE(menu_num[1] > 0);
+
+    return 0;
+}