[Feature] Download DXVK 1.10.3 if no Vulkan 1.3 support is detected

[CommandMC]

First and foremost: Yes, this idea is borrowed from Lutris' most recent release. I have however been meaning to do something like this for a long time, since I own several PCs affected by this as well

A lot of older GPUs don't support Vulkan 1.3, which DXVK versions > 1.X.X requires. For those users, the "Auto-Install DXVK" function was entirely useless, as the DXVK Heroic installs will never work on their system.
Now, Heroic will query the user's GPUs for their Vulkan support and install the older 1.10.3 version of DXVK if no Vulkan 1.3 support is detected.

Internally, this is done by:

• accepting not just a string as a download URL for tools, but also a function returning a string
• DXVK's url function querying Vulkan support and choosing either the latest release or 1.10.3 based on that
• new utility functions being added to interface with Vulkan directly

Vulkan functions are called using a helper binary (https://github.com/imLinguin/vulkan-helper-rs)

---

Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[imLinguin]

Wow that was fast. Looks good to me. We can merge after Lint and Tests pass.

[CommandMC]

The tests look strange to me, it seems like Jest doesn't reset the module's state between runs (even with resetModules enabled)

[Etaash-mathamsetty]

looks fine other than this
and also maybe add some stuff for downloading older vkd3d-proton

[arielj]

maybe this function can be moved outside the const tools = [... so we would just set url as a string, and then we don't need the const download_url = typeof tool.url === 'string' ? tool.url : tool.url() line if it's always a string

[arielj]

if you do that you can even do something like if (download_url) { tools.push({name: 'dxvk', url: dxvkUrl, etc...}) } so you can handle the case when DXVK cannot be used (we have the FIXME saying we can't handle that case) by not adding it to the array of tools

[CommandMC]

Simply not downloading DXVK isn't quite enough, the frontend/other parts of the backend would still try to install it (which would then fail, since the folder isn't there)

[arielj]

oh I see

[arielj]

I think my first comment still applies though, to not have to do the if typeof === 'string' conditional

[CommandMC]

I've moved it into its own function with aebb5fe now. This is definitely clearer, thanks for the suggestion