Clarify bootguard key fusing and update platforms limitations ~and Intel gen 14th strong dependencies against ME/CSME~

[tlaurion]

There seems to be a confusion from community around possibility of getting Clevo laptops with unfused bootguard keys and being able to flash custom firmware on those Clevo laptops. Clarify that Clevo laptops have unfused bootguard keys only if ordered through Novacustom bulk orders from Clevo to be rebranded and distributed with Dasharo firmware.

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EDIT:
ME/CSME is now required (cannot be disabled) to obtain S0ix sleep state. S3 is not possible on newer Intel platforms.
So user has to switch ME on to suspend (sleep), or accept that no sleep is possible. Note that hibernation is not possible on QubesOS (Xen). So this means important change on UX.
This is true on Intel gen 13+, ie NovaCustom V56 14th Gen, amongst others.

This proved to be wrong statement, not so late after QubesOS mini-summit 2024, it was proven that Novacustom V56/Nitropad V56 Intel CPU gen 14th CAN do S3 still. So this problem is reported for next gen, CSME/ME not required for sleep YET.