Eyeballer cannot be used offline without a code change

[bfgstroy]

Description of Bug

During initial construction of the Eyeballer model, the Imagenet weights are downloaded from the internet. This is performed even when using the pretrained weights from Eyeballer. The need for Imagenet to be downloaded prevents Eyeballer from being usable offline.

What should the expected behavior be

Imagenet weights should only be downloaded when training a new model and not when used with the "predict" flag.

This can be resolved by setting the weights during initial construction to "None" instead of "Imagenet" in the model.py file.

Steps to Reproduce

Delete the cache of Imagenet. Disable internet connectivity and perform a prediction with Eyeballer using the pretrained weights.

Additional context

Eyeballer was used on an internal assessment by someone unfamiliar with the code base. This bug report was requested by them.