Add Geekom IT-13 i9-13900H

[igorpecovnik]

Last generation of Intel mobile i9-13900h ... if it fits the policy?

[ThomasKaiser]

Thank you.

I thought about those x86_64 scores for a while and am currently slowly preparing an additional Results_x86_64.md file containing those numbers.

I think those x86_64 scores are partially rather pointless (compared to the benchmark mess on ARM SBCs which was the incentive to start sbc-bench in the 1st place) but once I'm done writing the introduction for Results_x86_64.md explaining why/how the generated benchmark scores differ from the ARM SBC situation I post them here as RFC waiting for feedback.