[Model] Add Ernie4.5 VL Model Support

[CSWYF3634076]

Purpose

Support Baidu Ernie4.5 VL model for vllm

Note: torch.compile is not supported. Due to the model limitations of multimodal experts and text experts, using torch.compile may fail to start

[github-actions]

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[gemini-code-assist]

Code Review

This pull request adds support for the Baidu Ernie4.5 VL model. The changes include new model implementation files, rotary embedding logic, and a custom processor. While the overall structure seems correct, there are several critical issues that need to be addressed. These include hardcoded values that make the code brittle, unsafe tensor operations that could lead to runtime errors, incorrect function calls in the processor, and some incomplete logic indicated by TODOs. Addressing these points will significantly improve the robustness and maintainability of the new model support.

[ywang96]

Thanks for the contritbution! Is this PR ready for review? If not, could you please convert this to a draft PR?

[CSWYF3634076]

Thanks for the contritbution! Is this PR ready for review? If not, could you please convert this to a draft PR?

@ywang96 Hi, the PR is ready for review. Could you help review it?