Todo: need to correct traversing algorithms and add empty listobjects at head and tail of lists
Prepare reimplementation of all lists functions
Add functions to create and destroy lists
Implement create_emptyList
Implement destroy_list
Implement insert_readyList
Implement extract_readyList
Implement insert_timerList
Implement extract_timerList
Implement insert_waitingList
Implement extract_waitingList