Create memory region reservations

[todo]

Memory region reservations is sort of insane in HOS/NX - especially for 32-bit. I'll figure it out later.

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SunriseOS/kernel/src/syscalls.rs

Lines 1072 to 1082 in 27ab3e4

	// TODO: Create memory region reservations
	// BODY: Memory region reservations is sort of insane in HOS/NX - especially
	// BODY: for 32-bit. I'll figure it out later.
	newproc.pmemory.lock().create_regular_mapping(VirtualAddress(procinfo.code_addr as usize), procinfo.code_num_pages as usize * PAGE_SIZE, MemoryType::CodeStatic, MappingAccessRights::k_r())?;
	let curproc = scheduler::get_current_process();
	let hnd = curproc.phandles.lock().add_handle(Arc::new(Handle::Process(newproc)));
	Ok(hnd as _)
	}

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This issue was generated by todo based on a TODO comment in 27ab3e4 when #458 was merged. cc @roblabla.