Feature Request

In an effort to help usability and to encourage best practices, we should offer default processing modules. This will require the following:

• a (non-breaking) schema change adding optional ProcessingModules to /processing.
• helper API functions for easily accessing these ProcessingModule objects.

My preferred syntax for the API change would be that nwb.processing.behavior would return the ProcessingModule named behavior if it exists, and if it does not exist pynwb would automatically create that module and return it.

Checklist

• Have you ensured the feature or change was not already reported ?
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