The "Compiling Shaders" DXVK HUD variable should be enabled by default

Feature Request

I confirm:

• that I haven't found another request for this feature.
• that I have checked whether there are updates for my system available that
  contain this feature already.

Description

Enable the compiler variable in DXVK's HUD by default, so players can see when the game is compiling shaders.

Justification [optional]

DXVK HUD normally has some pretty niche variables, not everyone needs to know CPU or GPU usage all the time. However, it would probably divert a load of confusion to the right place if the option; compiler in DXVK HUD was to be on by default. The "compiling shaders" message coming up every time a game stutters/ hangs would hopefully reduce the frequency to say "This game runs poorly", when in actuality, said game is likely shader caching on the first run.

Even if players don't know what "compiling shaders" actually means, the phrase is documented in other areas (such as the DXVK readme, and one would assume appropriate linux gaming subreddits) to get a cursory understanding of what any given game is doing when it stutters/ runs really slowly.

Risks [optional]

Not many come to mind, though perhaps the text might overlay with an ingame UI, which might cause issues.

Start by locating where DXVK HUD variables are configured and how the compiler variable is enabled. Consult the DXVK README for the documented HUD option, then verify that shader-compilation status appears by default without manual configuration and consider the reported risk of covering in-game UI.