Current behavior

0.12.1 added file-based storage through the use of GitHub storage. This should be expanded to all of the other current storage objects that only store pickles.

Proposed behavior

Add a kwarg to the storage interface that is something along the lines of store_as_pickle=False or store_as_file=True. Need to iron out if the storage and registration process would follow a similar pattern to the GitHub storage.

i.e. would users manually upload the file to S3 or would .build be responsible for uploading them (similar to how build current uploads pickles)

Example

This could easily unlock hot reloading flows for local or cloud-based storage types.