DICOM Image Types

[manthey]

If we have a DICOM image type that isn't in our enum, we won't redact it, but our enum is just a repetition of the image type. For flexibility, it would be better to always let these through. We can then add custom rules for deleting or keeping other image types. Otherwise, we can't redact most CT data.

[manthey]

@naglepuff This could just be wrapping self.image_type = WsiImageType(self.dicom_data.ImageType[WSI_IMAGE_TYPE_INDEX]) with a try / except, and, if needed setting self.image_type to WsiImageType.OTHER. Or, maybe it's be better to set it to self.dicom_data.ImageType[WSI_IMAGE_TYPE_INDEX] instead?