Ophys stim epochs and fov

[arielleleon]

This contains a huge amount of changes to create the session.json for the mesoscope platforms.

• Pull metadata for FieldOfView generation from tiff header and hdf5 files
• Index FieldOfView objects correctly
• Correctly add coupled_fov_index
• Parse platform.json for new power fields
• Create stim_epochs
• Add session_types
• Create data_description.json to save project codes in the summary attribute
• Remodel the camstim module so the parent class generates visual stimuli
• Add unit tests for camstim module
• Add unit tests for mesoscope
• Add resources for testing mesoscope session.json

@mekhlakapoor and @rcpeene : I did not unit test the OpenEphysCamstim object but I am guessing it can follow what I did for the parent Camstim class. It also needs to be tested to make sure that the opto files generate properly.

@Ahad-Allen - Will you please verify the camstim tests are producing values you would expect from the methods that build both the stim tables and epochs

[mekhlakapoor]

Can we remove this field_validator? It's empty

Dismissing requested change because linters have been fixed