initial arhitectural overhaul

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

crates/app/src/input/event_buffer.rs

@@ -0,0 +1,22 @@
+//! Input event buffer shared between executor and ECS
+
+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();
+    }
+}