Stop tracking wallust output

The work laptop's first install left five files dirty, all of them wallust
targets. Tracking generated colour files means each machine rewrites the
others' palette on every theme change — exactly the churn a shared repo
should not have.

hypr, waybar and swaync now get their colours as real files written into
real directories, so nothing is linked and nothing is tracked. kitty and
qutebrowser land inside directories this repo links wholesale, so those two
are ignored by path instead. swaync switched from a directory link to two
file links to make room for its generated colors.css.

Regeneration is automatic: hypr_refresh runs every 15 seconds on both
laptops, so a fresh machine has colours within a quarter of a minute.

hosts/system76/waybar/colors.css

@@ -1,19 +0,0 @@
-@define-color cursor #D4C4B4;
-@define-color background #141211;
-@define-color foreground #F3EBE0;
-@define-color color0  #3B3A39;
-@define-color color1  #85A3BD;
-@define-color color2  #B69D89;
-@define-color color3  #B5A08B;
-@define-color color4  #BAA383;
-@define-color color5  #C4AC92;
-@define-color color6  #DDC6A7;
-@define-color color7  #E5DACA;
-@define-color color8  #A1998E;
-@define-color color9  #85A3BD;
-@define-color color10 #B69D89;
-@define-color color11 #B5A08B;
-@define-color color12 #BAA383;
-@define-color color13 #C4AC92;
-@define-color color14 #DDC6A7;
-@define-color color15 #E5DACA;