WIP: Feat/example detector and tests

Adds in some new notebooks for a 'Test' detector, notebooks can be executed as part of a test suite.

Description

Done as part of moonshot for me to learn how to add new detector notebooks.

Next steps are:

• PR to add these notebooks to https://git.xfel.eu/gitlab/detectors/calibration_configurations
• Deployment to staging environment on max-exfl016

How Has This Been Tested?

N/A

Relevant Documents (optional)

Related to:

• https://git.xfel.eu/gitlab/moonshot/sqs/issues/6
• https://git.xfel.eu/gitlab/detectors/pycalibration/issues/42

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

Reviewers

@danilevc @ahmedk @schmidtp @hammerd