Split platform::unix into platform::x11 and platform::wayland

This also removes deprecated `WindowExtUnix::is_ready`.

src/platform/mod.rs

@@ -15,11 +15,47 @@
 //!
 //! However only the module corresponding to the platform you're compiling to will be available.
 
+#[cfg(target_os = "android")]
 pub mod android;
+#[cfg(target_os = "ios")]
 pub mod ios;
+#[cfg(target_os = "macos")]
 pub mod macos;
-pub mod unix;
+#[cfg(all(
+    feature = "wayland",
+    any(
+        target_os = "linux",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )
+))]
+pub mod wayland;
+#[cfg(target_arch = "wasm32")]
 pub mod web;
+#[cfg(target_os = "windows")]
 pub mod windows;
+#[cfg(all(
+    feature = "x11",
+    any(
+        target_os = "linux",
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+    )
+))]
+pub mod x11;
 
+#[cfg(any(
+    target_os = "windows",
+    target_os = "macos",
+    target_os = "android",
+    target_os = "linux",
+    target_os = "dragonfly",
+    target_os = "freebsd",
+    target_os = "netbsd",
+    target_os = "openbsd"
+))]
 pub mod run_return;