Config hidden layer number to run in 1 lazy graph

[libinta]

FILL IN THE PR DESCRIPTION HERE
Some models is hardcoded with running each hidden layer in computation graph for lazy mode when TP =1 . For some use case that is limited by TPOT, we can't run higher batch, we want to increase hidden layer to have more efficient computation.
Use VLLM_CONFIG_HIDDEN_LAYER to config the layers to run. Default to 1.
FIX #xxxx (link existing issues this PR will resolve)

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[mgawarkiewicz]

VLLM_CONFIG_HIDDEN_LAYERS needs to be documented

[libinta]

VLLM_CONFIG_HIDDEN_LAYERS needs to be documented

Where should I document it?

[mgawarkiewicz]

VLLM_CONFIG_HIDDEN_LAYERS needs to be documented

Where should I document it?

https://github.com/HabanaAI/vllm-fork/blob/habana_main/README_GAUDI.md
https://github.com/HabanaAI/vllm-fork/blob/habana_main/docs/source/getting_started/gaudi-installation.rst

[libinta]

VLLM_CONFIG_HIDDEN_LAYERS needs to be documented

Where should I document it?

https://github.com/HabanaAI/vllm-fork/blob/habana_main/README_GAUDI.md https://github.com/HabanaAI/vllm-fork/blob/habana_main/docs/source/getting_started/gaudi-installation.rst

Done.

[kdamaszk]

LGTM

[michalkuligowski]

Small typo - througHput

[michalkuligowski]

Also you removed VLLM_HANDLE_TOPK_DUPLICATES, please bring back

[michalkuligowski]

As above typo

Fixed