Feature for displaying plotted figures after save_preprocessed() runs.

[Hashbrownsss]

What is this PR

• Addition of a new feature

What does this PR do?

• Added functionality to generate and display diagnostic plots after save_preprocessed() execution.

References

Issue #216

How has this PR been tested?

1. Manually verified by running a test script that generates diagnostic plots.
2. Checked that all expected figures were created in the correct locations.
3. Pre-commit tests passed successfully.

Is this a breaking change?

No this doesn't break any existing functionality.

Does this PR require an update to the documentation?

No, unless the moderators feel the need to do so.

If any features have changed, or have been added. Please explain how the
documentation has been updated.

Documentation hasn't been updated, will do so asap, if required.

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[Hashbrownsss]

Will look into the test failures ASAP