Implement PyTest fixtures for teardown code

[axiomcura]

          Consider using a [pytest fixture which leverages yield](https://docs.pytest.org/en/6.2.x/fixture.html#yield-fixtures-recommended) for this class.

_Originally posted by @d33bs in https://github.com/WayScience/CytoSnake/pull/46#discussion_r1187819913_

This is goes along with #49