Added object-name c-string getter function to basic objects so they can be referenced to free if dynamically created. (#754)

* Added basic object-name get for ASCII names to enable free if they were dynamically created. Added unit testing to validate the basic object ASCII object-name API.

* Removed static scope on character array used for name since the array gets copied into characterstring array and static is not needed.

test/bacnet/basic/object/netport/src/main.c

@@ -57,6 +57,10 @@ static void test_network_port(void)
             OBJECT_NETWORK_PORT, object_instance, Network_Port_Property_Lists,
             Network_Port_Read_Property, Network_Port_Write_Property,
             known_fail_property_list);
+        bacnet_object_name_ascii_test(
+            object_instance,
+            Network_Port_Name_Set,
+            Network_Port_Object_Name_ASCII);
         port++;
     }