add colors for dunst (#393)

Added TokyoNight colorscheme for [dunst](https://dunst-project.org/) notification daemon.

lua/tokyonight/extra/dunst.lua

@@ -0,0 +1,32 @@
+local util = require("tokyonight.util")
+
+local M = {}
+
+--- @param colors ColorScheme
+function M.generate(colors)
+  local dunst = util.template(
+    [[
+# TokyoNight colors for dunst
+# For more configuraion options see https://github.com/dunst-project/dunst/blob/master/dunstrc
+
+[urgency_low]
+    background = "${bg_dark}"
+    foreground = "${fg}"
+	frame_color = "${fg}"
+
+[urgency_normal]
+    background = "${bg}"
+    foreground = "${fg}"
+	frame_color = "${fg}"
+
+[urgency_critical]
+    background = "${bg_highlight}"
+    foreground = "${error}"
+    frame_color = "${error}"
+]],
+    colors
+  )
+  return dunst
+end
+
+return M

lua/tokyonight/extra/init.lua

@@ -22,6 +22,7 @@ M.extras = {
   prism = {ext = "js", url = "https://prismjs.com", label = "Prism"},
   windows_terminal = {ext = "json", url = "https://aka.ms/terminal-documentation", label = "Windows Terminal"},
   zathura = {ext = "zathurarc", url = "https://pwmt.org/projects/zathura/", label = "Zathura"},
+  dunst = {ext = "dunstrc", url = "https://dunst-project.org/", label = "Dunst"},
 }
 
 local function write(str, fileName)