feat(terminal): configure wezterm titlebar so it looks nice

When using wezterm on wayland the gnome titlebar dose not get used. The
coloring of this is dark by default and dose not look good with a light
background.

Going forward I would like to configure this to adapt to the system
light or dark settings.

site-modules/core/files/wezterm.lua

@@ -1,5 +1,8 @@
 local wezterm = require "wezterm"
 
+local window_frame_fg = "#000000"
+local window_frame_bg = "#ffffff"
+
 return {
   -- Use a sexy terminal font with ligatures.
   --font = wezterm.font("Liga SFMono Nerd Font"),
@@ -52,4 +55,17 @@ return {
       action = wezterm.action.SendKey { mods = "CTRL", key = "w" },
     },
   },
+
+  window_frame = {
+    inactive_titlebar_bg = window_frame_bg,
+    active_titlebar_bg = window_frame_bg,
+    inactive_titlebar_fg = window_frame_fg,
+    active_titlebar_fg = window_frame_fg,
+    inactive_titlebar_border_bottom = window_frame_bg,
+    active_titlebar_border_bottom = window_frame_bg,
+    button_fg = window_frame_fg,
+    button_bg = window_frame_bg,
+    button_hover_fg = window_frame_bg,
+    button_hover_bg = window_frame_fg,
+  },
 }