Add remote server cross compilation (#19136)

This will allow us to compile debug builds of the remote-server for a
different architecture than the one we are developing on.

This also adds a CI step for building our remote server with minimal
dependencies.

Release Notes:

- N/A

crates/gpui/src/platform/linux.rs

@@ -1,14 +1,22 @@
 mod dispatcher;
 mod headless;
 mod platform;
+#[cfg(any(feature = "wayland", feature = "x11"))]
 mod text_system;
+#[cfg(feature = "wayland")]
 mod wayland;
+#[cfg(feature = "x11")]
 mod x11;
+
+#[cfg(any(feature = "wayland", feature = "x11"))]
 mod xdg_desktop_portal;
 
 pub(crate) use dispatcher::*;
 pub(crate) use headless::*;
 pub(crate) use platform::*;
+#[cfg(any(feature = "wayland", feature = "x11"))]
 pub(crate) use text_system::*;
+#[cfg(feature = "wayland")]
 pub(crate) use wayland::*;
+#[cfg(feature = "x11")]
 pub(crate) use x11::*;