feat: moves aind_data_schema.models here

[jtyoung84]

• Ports aind_data_schema.models to an isolated repo
• Changed field_validators to model_validators in devices class for validators that require referencing other fields
• Adds unit tests for 100% coverage
• Fixed typo in AuditoryStimulation stimulus_name (was originally sitmulus_name)

[saskiad]

I'm not sure I think it makes sense to move all of this out of the aind-data-schema repo. Eg. things like coordinates and base seem like they should be in the schema itself. The ones that definitely need to be in the model repo are:
modalities
organizations
platforms
process_names
registry
species
harp_types

I think devices, coordinates, pid_names, and reagent should be part of the schema. Probably stimulus too - this one I'm hoping we can wean ourselves off of having these classes, but I think it belongs in the schema for now.

I'm ambivalent about units

[dyf]

I'm not sure I think it makes sense to move all of this out of the aind-data-schema repo. Eg. things like coordinates and base seem like they should be in the schema itself. The ones that definitely need to be in the model repo are: modalities organizations platforms process_names registry species harp_types

I think devices, coordinates, pid_names, and reagent should be part of the schema. Probably stimulus too - this one I'm hoping we can wean ourselves off of having these classes, but I think it belongs in the schema for now.

I'm ambivalent about units

Agree with this list. I think units can live here.

[saskiad]

Looks good to me