Adding alternative resOriginalAlt version to Photos

[gdarruda]

Proposed change

Photos with RAW and JPEG needs an additional version key resOriginalAlt, adding it enables the use of RAW format files of photos.

Type of change

• [ ] Dependency upgrade
• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New service (thank you!)
• [x] New feature (which adds functionality to an existing service)
• [ ] Breaking change (fix/feature causing existing functionality to break)
• [ ] Code quality improvements to existing code or addition of tests
• [ ] Documentation or code sample

Example of code:

for photo in api.photos.all:

    if 'alternative' in photo.versions:

        alternative = photo.versions['alternative']
        print(alternative['type'])
        print(alternative['url'])
   

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:

Checklist

• [x] The code change is tested and works locally.
• [x] Local tests pass. Your PR cannot be merged unless tests pass
• [ ] There is no commented out code in this PR.
• [ ] Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• [ ] Documentation added/updated to README

[jcass77]

This PR is superseded by https://github.com/picklepete/pyicloud/pull/347, which will ensure that edited versions can be downloaded in whatever resolutions are available.