rename component to blue-cache

[flpanbin]

rename component to blue-cache

[gemini-code-assist]

Code Review

This pull request renames the DPU agent and host-side NIXL plugin from 'dpu_dma_copy' and 'DOCA_DMA_PROXY' to 'blue-cache' and 'BLUE_CACHE' across all source files, build configurations, scripts, and documentation. The review feedback suggests making the LMCache patching script more robust and backward-compatible by checking for both the old and new plugin names to avoid duplicate patch application errors.

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