Allowing Message.create_message to accept bytes too

[jamesbraza]

Giving clients a bit more flexibility

[Copilot]

Pull request overview

This PR extends the image handling capabilities of Message.create_message to accept raw bytes as an image input type, providing more flexibility to clients who may have image data as bytes rather than numpy arrays or base64 strings.

Changes:

• Updated encode_image_to_base64 function in utils.py to handle bytes input by opening it with PIL's Image.open()
• Updated type hints and documentation in message.py to reflect the new bytes support
• Added test coverage for bytes input in test_encode_image_to_base64 test function

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/aviary/utils.py	Added logic to handle bytes input by using Image.open(io.BytesIO(img)) and refactored the conditional logic to be more explicit
src/aviary/message.py	Updated type hints for the images parameter and documentation to include bytes as a supported image type
tests/test_utils.py	Renamed test function from test_encode_image_to_base64_pil to test_encode_image_to_base64 and added a new subtest for bytes input

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