Steam Deck (controller) Controls

Hi there,
could you also allow input mapping on Handheld consoles like SteamDeck etc?

People can use any key on a keyboard&mouse...
I have 4 extra buttons on the bottom of my SteamDeck that I could use for flasks but I can't because the only way for me to play the game is how a dev mapped the controls.

Sure there can be some specific UI and window keys that can't be changed... but for example why can't I change the pickup item key etc.

It's fun to play but it's also kinda annoying.