initial arhitectural overhaul

Signed-off-by: Sienna Meridian Satterwhite <sienna@r3t.io>

crates/libmarathon/src/platform/mod.rs

@@ -0,0 +1,10 @@
+//! Platform-specific input bridges
+//!
+//! This module contains platform-specific code for capturing input
+//! and converting it to engine-agnostic InputEvents.
+
+#[cfg(target_os = "ios")]
+pub mod ios;
+
+#[cfg(not(target_os = "ios"))]
+pub mod desktop;