Add menu item to change upscale method

[coavins]

This PR adds a menu item to set the upscaling method to nearest neighbor.

Depends on Kenix3/libultraship#1003

Resolves #6234

Build Artifacts

• soh-linux.zip
• soh-windows.zip
• soh-mac.zip

[coavins]

[Malkierian]

You'll need to add CVAR_UPSCALE_FILTER to CMake/lus_cvars.cmake with the CVAR_PREFIX_SETTING macro. Also, you need to run clang format.

[Malkierian]

Ohhh, I see why this build is failing. The branch used for this PR isn't pointing to your LUS branch that's being submitted in that LUS PR. In order to build, until that's merged, you'll need to point it to that. After it's merged, you can just update the LUS ref here to the latest commit hash.

[coavins]

Sorry, it should be pointing at the right LUS branch now. I wasn't sure whether that should be included here.

[Malkierian]

Latest build log:

D:\a\Shipwright\Shipwright\libultraship\src\fast\backends\gfx_direct3d11.cpp
D:\a\Shipwright\Shipwright\libultraship\src\fast\backends\gfx_direct3d11.cpp(780): error C2039: 'Filter': is not a member of 'D3D11_TEXTURE2D_DESC'
C:\Program Files (x86)\Windows Kits\10\include\10.0.26100.0\um\d3d11.h(2812): note: see declaration of 'D3D11_TEXTURE2D_DESC'

I'd assume the Mac issue is similar, but with Metal.

[coavins]

Should be resolved now, I also fixed the potential sampler issue with the metal backend.