[Hardware][Intel-Gaudi] Support Automatic Prefix Caching on HPU

[adobrzyn]

Added support for Automatic Prefix Caching for HPU/Gaudi. Disabled by default, might be turned on with enable_prefix_caching=True (in code) / --enable-prefix-caching (server spawning)

[github-actions]

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[adobrzyn]

Please rerun lint-and-deploy test. It is failing on timeout, but it should pass