Use wezterm instead of foot

It's fast and Wayland native, but doesn't have the weird character
box width glitch.

dotfiles/wezterm.lua

@@ -10,6 +10,9 @@ if wezterm.config_builder then
   config = wezterm.config_builder()
 end
 
+config.font = wezterm.font 'Cascadia Mono'
+config.font_size = 13.5
+
 -- This is where you actually apply your config choices
 
 -- Selenized colors by Alan Orth