Add yaru gtk theme

default/hypr/envs.conf

@@ -1,3 +1,4 @@
+# Cursor size
 env = XCURSOR_SIZE,24
 env = HYPRCURSOR_SIZE,24
 
@@ -14,6 +15,9 @@ xwayland {
   force_zero_scaling = true
 }
 
+# GTK Theme
+env = GTK_THEME,Yaru-purple-dark
+
 # Make .desktop files available for wofi
 env = XDG_DATA_DIRS,/usr/share:/usr/local/share:~/.local/share