[Feat] Add code to look for vdf files that define compatibility tool

[a5ehren]

…locations instead of just assuming that /proton exists. This fixes an issue that cachyos is about to file

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

• [ x ] Tested the feature and it's working on a current and clean install.
• [ x ] 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)

[a5ehren]

CI runner is failing because the gh action installs Node 20, but the globSync API does not exist until Node 22.

test:ci task should start passing once #5097 is done

[CommandMC]

Please use early return / inverted if conditions to avoid excessive indentation like this

For example, instead of

if (someCondition) {
  // Further logic
}

instead use

if (!someCondition) return // Or "continue", or error handling, depending on context
// Further logic, now with one less indentation level

You can further improve the code by using async code (I particularly like Promise.try to avoid a classic try/catch statement), but I understand this may be difficult if you're not used to it

[a5ehren]

I just realized that I forgot to push after changing to GlobSync for finding the files. I'll push that and then look at the async.