hyperlight_host doesn't build on Windows without init-paging feature enabled

[marosset]

What happened?

Sandbox creation code for WHP has a build error if init-paging feature is not enabled

What did you expect to happen?

Sandbox creation for WHP should build with all optional features disabled

Steps to reproduce the behavior

include hyperlight_host v0.7.0 in another project and build on Windows

Hyperlight Version

0.7.0

OS version

On Linux:
$ cat /etc/os-release
# paste output here

$ uname -a
# paste output here

On Windows:
C:\> cmd /c ver
# paste output here

Additional Information

mgr.shared_mem.raw_mem_size() is referenced at

hyperlight/src/hyperlight_host/src/sandbox/uninitialized_evolve.rs

Lines 245 to 255 in c725c8b

	#[cfg(target_os = "windows")]
	Some(HypervisorType::Whp) => {
	use crate::hypervisor::wrappers::HandleWrapper;
	let mmap_file_handle = mgr
	.shared_mem
	.with_exclusivity(|e| e.get_mmap_file_handle())?;
	let hv = crate::hypervisor::hyperv_windows::HypervWindowsDriver::new(
	regions,
	mgr.shared_mem.raw_mem_size(), // we use raw_* here because windows driver requires 64K aligned addresses,
	pml4_ptr.absolute()?,

when target_os = Windows

BUT

crate::mem::shared_mem::SharedMemory is only used when init-paging feature is enabled

hyperlight/src/hyperlight_host/src/sandbox/uninitialized_evolve.rs

Lines 36 to 37 in c725c8b

	#[cfg(feature = "init-paging")]
	use crate::mem::shared_mem::SharedMemory;

This causes build issues when hyperlight_host's build.rs script runs when the crate is included in other projects (like hyperlight-wasm) AND init-paging feature is not enabled.