fix: title bar buttons work with a finger on Wayland (Issue #36)

winit 0.29 draws the title bar itself on Wayland but only handles the
mouse there. A vendored copy of winit 0.29.15 (vendor/winit, used via
[patch.crates-io]) passes touches on the decorations to the frame like a
left click, so close, minimize and maximize work with a finger and
dragging the title bar moves the window.

CI no longer sets a global -D warnings, which would also apply to the
vendored crate; clippy still runs with -D warnings.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

vendor/winit/src/platform/mod.rs

@@ -0,0 +1,65 @@
+//! Contains traits with platform-specific methods in them.
+//!
+//! Contains the follow OS-specific modules:
+//!
+//!  - `android`
+//!  - `ios`
+//!  - `macos`
+//!  - `unix`
+//!  - `windows`
+//!  - `web`
+//!
+//! And the following platform-specific modules:
+//!
+//! - `run_on_demand` (available on `windows`, `unix`, `macos`, `android`)
+//! - `pump_events` (available on `windows`, `unix`, `macos`, `android`)
+//!
+//! However only the module corresponding to the platform you're compiling to will be available.
+
+#[cfg(android_platform)]
+pub mod android;
+#[cfg(ios_platform)]
+pub mod ios;
+#[cfg(macos_platform)]
+pub mod macos;
+#[cfg(orbital_platform)]
+pub mod orbital;
+#[cfg(any(x11_platform, wayland_platform))]
+pub mod startup_notify;
+#[cfg(wayland_platform)]
+pub mod wayland;
+#[cfg(wasm_platform)]
+pub mod web;
+#[cfg(windows_platform)]
+pub mod windows;
+#[cfg(x11_platform)]
+pub mod x11;
+
+#[cfg(any(
+    windows_platform,
+    macos_platform,
+    android_platform,
+    x11_platform,
+    wayland_platform
+))]
+pub mod run_on_demand;
+
+#[cfg(any(
+    windows_platform,
+    macos_platform,
+    android_platform,
+    x11_platform,
+    wayland_platform
+))]
+pub mod pump_events;
+
+#[cfg(any(
+    windows_platform,
+    macos_platform,
+    x11_platform,
+    wayland_platform,
+    orbital_platform,
+    docsrs
+))]
+pub mod modifier_supplement;
+pub mod scancode;