Touch layout for Nintendo Switch and PS Vita ports

[SNMetamorph]

There is the obvious problem: mechanical buttons on these consoles aren't enough to cover all required keybinds. So, we could solve this problem by placing these keybinds as buttons on touchscreen. Here are examples of such buttons:

• Voice chat button
• Inventory slot selecting buttons (from 0 to 9, this is commonly used for in-game map voting or custom buymenu)
• Buymenu displaying button (for mods such as CS 1.6)
• Scoreboard displaying button
• Player custom decal spraying button

I'm absolutely not aware of how does all things around touchscreen works in engine, but I guess such things could be derived from Android port touch configurations. This would be very good if somebody will help with it. Also this does not seems a hard work for somebody who already familiar with touch configs :)

[SNMetamorph]

@Vladislav4KZ maybe you can suggest something?

[a1batross]

Yep, I see this as a problem even on Steam Deck, which even has 4 extra buttons and touchpads.

We absolutely need per-platform global-ish configuration files, so we don't have to ship them in valve folder. This is something that was also requested for video.cfg and <renderer>.cfg earlier.