* Queue implementation using two Stacks
* fix typo in queue/queue_on_two_stacks.py
* add 'iterable' to queue_on_two_stacks initializer
* make queue_on_two_stacks.py generic class
* fix ruff-UP007 in queue_on_two_stacks.py
* enhance readability in queue_on_two_stacks.py
* Create queue_by_two_stacks.py
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Co-authored-by: Christian Clauss <cclauss@me.com>
