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/mac.rs

@@ -17,9 +17,14 @@ use metal_renderer as renderer;
 use crate::platform::blade as renderer;
 
 mod attributed_string;
+
+#[cfg(feature = "font-kit")]
 mod open_type;
-mod platform;
+
+#[cfg(feature = "font-kit")]
 mod text_system;
+
+mod platform;
 mod window;
 mod window_appearance;
 
@@ -39,9 +44,11 @@ pub(crate) use dispatcher::*;
 pub(crate) use display::*;
 pub(crate) use display_link::*;
 pub(crate) use platform::*;
-pub(crate) use text_system::*;
 pub(crate) use window::*;
 
+#[cfg(feature = "font-kit")]
+pub(crate) use text_system::*;
+
 trait BoolExt {
     fn to_objc(self) -> BOOL;
 }