refactor:change playlist data structure

refactor(merge_by_year):change merge type

fix:fix a bug

feat(Queue.py):add Queue and set it on all songs

refactor(stack.py):change stack structure

refactor(dels,cls):edit their performance

refactor(delete): edit delete function performance in stack.py

refactor(dels): improve proccess of removing artist

refactor: change countw and searchw functions performance

feat:add a ability to delete songs by 'delms' function

refactor:check function's time complexity and correction them if needed.

fix:fix some bugs

feat: add songPaly's history

feat: add get max and min rated function

refactor: edit playlist part