add memory usage

Ubiquitous/XiZi_AIoT/services/lib/usyscall/usyscall.c

@@ -102,6 +102,11 @@ int show_cpu()
     return syscall(SYSCALL_SYS_STATE, SYS_STATE_SHOW_CPU_INFO, 0, 0, 0);
 }
 
+int show_actree()
+{
+    return syscall(SYSCALL_SYS_STATE, SYS_STATE_SHOW_ACTREE, 0, 0, 0);
+}
+
 uintptr_t get_second()
 {
     sys_state_info info;

Ubiquitous/XiZi_AIoT/services/lib/usyscall/usyscall.h

@@ -47,6 +47,7 @@ typedef enum {
     SYS_STATE_SHOW_CPU_INFO,
     SYS_STATE_GET_CURRENT_TICK,
     SYS_STATE_GET_CURRENT_SECOND,
+    SYS_STATE_SHOW_ACTREE,
 } sys_state_option;
 
 typedef enum {
@@ -99,6 +100,7 @@ int set_priority(sys_state_info* info);
 int show_task();
 int show_mem();
 int show_cpu();
+int show_actree();
 
 uintptr_t get_second();
 uintptr_t get_tick();