[NTOSKRNL] Add a non paged memory dumper in case of low memory situation.

[NTOSKRNL] Add a non paged memory dumper in case of low memory situation.
Its purpose is to dump the non paged consumption, tag by tag,
to allow tracking potential faulting driver in case ReactOS starts lacking memory.
This will look like what !poolused outputs, even though it doesn't deal with paged pool.

Thanks to Thomas for his kind review and improvement suggestions.

CORE-14048