[kernel][ipc] add send wait support for message queue

include/rtdef.h

@@ -742,6 +742,8 @@ struct rt_messagequeue
     void                *msg_queue_head;                /**< list head */
     void                *msg_queue_tail;                /**< list tail */
     void                *msg_queue_free;                /**< pointer indicated the free node of queue */
+
+    rt_list_t            suspend_sender_thread;         /**< sender thread suspended on this message queue */
 };
 typedef struct rt_messagequeue *rt_mq_t;
 #endif

include/rtthread.h

@@ -379,6 +379,10 @@ rt_mq_t rt_mq_create(const char *name,
 rt_err_t rt_mq_delete(rt_mq_t mq);
 
 rt_err_t rt_mq_send(rt_mq_t mq, const void *buffer, rt_size_t size);
+rt_err_t rt_mq_send_wait(rt_mq_t     mq,
+                         const void *buffer,
+                         rt_size_t   size,
+                         rt_int32_t  timeout);
 rt_err_t rt_mq_urgent(rt_mq_t mq, const void *buffer, rt_size_t size);
 rt_err_t rt_mq_recv(rt_mq_t    mq,
                     void      *buffer,