feat: enable vim keys for btop

[martinmose]

Omarchy already ships with Vim-like keybindings so let's use vim keys for btop as well 🙏

[martinmose]

Do we need a migration for this? 🤔
Something like...

#!/bin/bash 

echo "Enabling vim keys in btop" 

CONFIG_FILE=~/.config/btop/btop.conf 
if [ -f "$CONFIG_FILE" ]; then 
    if grep -q "^vim_keys = " "$CONFIG_FILE"; then 
        sed -i 's/^vim_keys = False/vim_keys = True/' "$CONFIG_FILE" 
    fi
fi

?