yoda: fork pivot — Wayland-only + ungate winit + soft-fork libcosmic-yoda (squashed)

Squash of 7 yoda commits forming the fork pivot:
- 255cf7cc rename: libcosmic -> libcosmic-yoda (fork 0.1.0-yoda)
- 8701aa31 feat(yoda): Wayland-only cut — drop winit and x11 features
- 6736a596 yoda: soft-fork pivot — keep Cargo name 'libcosmic' for dep unification
- 3e23d087 yoda: re-apply hard rename — libcosmic -> libcosmic-yoda (0.1.0-yoda)
- aec3eb61 yoda: ungate remaining winit+wayland combined cfgs
- 8ab7b158 yoda-v2: color_picker Theme ref + context_menu/menu ungate winit
- 8d1d8739 yoda: drop x11 defaults on iced_winit + iced_tiny_skia

src/action.rs

@@ -1,7 +1,6 @@
 // Copyright 2023 System76 <info@system76.com>
 // SPDX-License-Identifier: MPL-2.0
 
-#[cfg(feature = "winit")]
 use crate::app;
 #[cfg(feature = "single-instance")]
 use crate::dbus_activation;
@@ -9,7 +8,6 @@ use crate::dbus_activation;
 pub const fn app<M>(message: M) -> Action<M> {
     Action::App(message)
 }
-#[cfg(feature = "winit")]
 pub const fn cosmic<M>(message: app::Action) -> Action<M> {
     Action::Cosmic(message)
 }
@@ -23,7 +21,6 @@ pub const fn none<M>() -> Action<M> {
 pub enum Action<M> {
     /// Messages from the application, for the application.
     App(M),
-    #[cfg(feature = "winit")]
     /// Internal messages to be handled by libcosmic.
     Cosmic(app::Action),
     #[cfg(feature = "single-instance")]