vendored bevy_egui and removed legacy code :/

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

crates/app/src/input/event_buffer.rs

@@ -1,22 +1,5 @@
-//! Input event buffer shared between executor and ECS
+//! Input event buffer re-export
+//!
+//! InputEventBuffer is now defined in libmarathon::engine
 
-use bevy::prelude::*;
-use libmarathon::engine::InputEvent;
-
-/// Input event buffer resource for Bevy ECS
-#[derive(Resource, Default)]
-pub struct InputEventBuffer {
-    pub events: Vec<InputEvent>,
-}
-
-impl InputEventBuffer {
-    /// Get all events from this frame
-    pub fn events(&self) -> &[InputEvent] {
-        &self.events
-    }
-
-    /// Clear the buffer
-    pub fn clear(&mut self) {
-        self.events.clear();
-    }
-}
+pub use libmarathon::engine::InputEventBuffer;