meta: Use kitty instead of ueberzug

Since ueberzug only works in X, and since ranger previews currently
conflict with tmux due to a new python version on arch linux, ueberzug
has no real advantage besides making image previews work in alacritty,
which I ultimately decided against due to how it handles fcitx input on
Xorg.

neofetch/.config/neofetch/config.conf

@@ -1,5 +1,5 @@
 gtk2="off"
 block_range=(1 7)
-image_backend="ueberzug"
+image_backend="kitty"
 
 # vim:ft=conf

ranger/.config/ranger/rc.conf

@@ -31,6 +31,6 @@ alias w shell -fs wal -o "$HOME/.config/wal/done.sh" -i %f
 set use_preview_script true
 set preview_files true
 set preview_images true
-set preview_images_method ueberzug
+set preview_images_method kitty
 
 # vim:ft=dosini