RFR: 7904049: Add LLM inference example to jextract samples [v2]

[Nizar Benalla]

On Mon, 30 Jun 2025 10:16:35 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

>> Please review this PR to add an LLM inference example to the jextract samples.
>> 
>> Thanks!
>
> Nizar Benalla has updated the pull request incrementally with one additional commit since the last revision:
> 
>   use `MemorySegment::reinterpret` to clean up objects
>   modify compile script slightly

Thanks for reviewing

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PR Comment: https://git.openjdk.org/jextract/pull/285#issuecomment-3027523410