[Model] Implement merged input processor for Phi-3-Vision models

[Isotr0py]

• Implement merged input processor for Phi-3-Vision models

TODO

• Expose num_crops and update mm_processor_kwargs test

[github-actions]

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[Isotr0py]

The model tests and mm_processor_kwargs tests have all passed locally.

[Isotr0py]

BTW, tests/multimodal/test_processor_kwargs.py is failing since we removed input_mapper etc for phi3_v, are there any models that we can migrate the test to?

Update: I decided to migrate the test to use InternVL2 for test, because its max_dynamic_patch is equivalent to num_crops in Phi3v and we probably put it to last to modify. (It doesn't have a hf_processor)

[DarkLight1337]

I can verify that the model also works on my end. Thanks for helping with the refactoring effort!