* added code for handling video object ,as dictionary of frames and metadata, in chat template
* added new test where videos are passed as objects (dict of frames, metadata) in the chat template
* modified hardcoded video_len check that does not match with increased number of tests cases.
* Modify hardcoded video_len check that fails with increased number of tests
* update documentation of multi-modal chat templating with extra information about including video object in chat template.
* add array handling in load_video()
* temporary test video inlcuded
* skip testing smolvlm with videos that are list of frames
* update documentation & make fixup
* Address review comments
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