Wayland/MacOS title bar color

[lrockreal]

Uses wayland_titlebar_color and macos_titlebar_color. Color is Surface

Wayland titlebars:

Main

Moon

Dawn

MacOS titlebars untested

[mvllow]

I'm curious what kitty looks like on your system without this change. For macOS, it is the "base" which matches our other terminal themes.

[lrockreal]

I use GNOME + Wayland on Linux, but I don't use rose-pine for my DE, only for my terminal (and a few other programs). Here's what that looks like:

In my opinion, it's better to configure the title bar in both places in case someone like me prefers to use just one. However, I haven't actually checked if my PR's colors line up with the colors it would have on GTK.