Add TensorizerArgs to client api server

[vrdn-23]

FILL IN THE PR DESCRIPTION HERE

FIX #xxxx (link existing issues this PR will resolve)

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[ywang96]

Left a comment but otherwise LGTM! Thank you for the PR! Please also make sure the PR also passes the formatting tests.

[ywang96]

Could you revert the changes on this file? As the NOTE says, we are not going to accept PRs modifying this file.

[sangstar]

Please keep in mind that TensorizerArgs.add_cli_args was actually initially injected directly in to AsyncEngineArgs in the initial PR adding Tensorizer support to vLLM. #4097 moved TensorizerArgs out from this and allowed Tensorizer to be configured from the model_loader_extra_config parameter within the LLM constructor, accepting a TensorizerConfig object, or --model-loader-extra-config via the CLI accepting a JSON string with the desired parameters.

[ywang96]

Closing this as #4097 refactored how additional model loading configs should be passed via the CLI. (Thanks @sangstar for the info)