fish: Set QT theme on vostok

tree/.config/fish/config.fish.tpl

@@ -3,6 +3,10 @@ set -x GPG_TTY (tty)
 set -x BROWSER firefox
 set -x EDITOR nvim
 
+{% if hostname == "vostok" %}
+set -x QT_STYLE_OVERRIDE Oxygen
+{% end %}
+
 {% if username == "u0_a213" %}
 set -x USER hulthe
 {% end %}