add patch to fix desktop mode patch (#22)

patches/remove-desktop-mode-patch.patch

@@ -0,0 +1,19 @@
+diff --git a/tools/example-showcase/remove-desktop-app-mode.patch b/tools/example-showcase/remove-desktop-app-mode.patch
+index 5db785410..7551ce3dc 100644
+--- a/tools/example-showcase/remove-desktop-app-mode.patch
++++ b/tools/example-showcase/remove-desktop-app-mode.patch
+@@ -1,10 +1,10 @@
+ diff --git a/crates/bevy_winit/src/winit_config.rs b/crates/bevy_winit/src/winit_config.rs
+-index b91e25d34..48f19b708 100644
++index f2cb424ec..e68e01de0 100644
+ --- a/crates/bevy_winit/src/winit_config.rs
+ +++ b/crates/bevy_winit/src/winit_config.rs
+-@@ -29,14 +29,7 @@ impl WinitSettings {
+-     /// [`Reactive`](UpdateMode::Reactive) if windows have focus,
+-     /// [`ReactiveLowPower`](UpdateMode::ReactiveLowPower) otherwise.
++@@ -31,14 +31,7 @@ impl WinitSettings {
++     ///
++     /// Use the [`EventLoopProxy`](crate::EventLoopProxy) to request a redraw from outside bevy.
+      pub fn desktop_app() -> Self {
+ -        WinitSettings {
+ -            focused_mode: UpdateMode::Reactive {