Suppress the warnings when building with GCC11 (#1622)

Add pragma to ignore "-Waddress-of-packed-member"
Adds `void` parameter to the prototype of some functions to make them
have strict declarations

core/shared/utils/bh_hashmap.h

@@ -141,7 +141,7 @@ bh_hash_map_get_struct_size(HashMap *hashmap);
  * @return the memory space occupied by HashMapElem structure
  */
 uint32
-bh_hash_map_get_elem_struct_size();
+bh_hash_map_get_elem_struct_size(void);
 
 /**
  * Traverse the hash map and call the callback function

core/shared/utils/bh_queue.h

@@ -40,7 +40,7 @@ typedef void (*bh_queue_handle_msg_callback)(void *message, void *arg);
 typedef void (*bh_msg_cleaner)(void *msg);
 
 bh_queue *
-bh_queue_create();
+bh_queue_create(void);
 
 void
 bh_queue_destroy(bh_queue *queue);

core/shared/utils/runtime_timer.h

@@ -13,7 +13,7 @@ extern "C" {
 #endif
 
 uint64
-bh_get_tick_ms();
+bh_get_tick_ms(void);
 uint32
 bh_get_elpased_ms(uint32 *last_system_clock);