Add my own crate features to pass through to deps

Closes #20

Now this crate can be told to build with or without certain behavior,
rather than needing to patch the Cargo.toml file.

Cargo.toml

@@ -4,7 +4,11 @@ version = "0.3.0"
 edition = "2024"
 
 [dependencies]
-bevy = { version = "0.16", features = ["dynamic_linking"] }
+bevy = "0.16"
 bevy-inspector-egui = "0.32.0"
-bevy_rapier2d = { version = "0.31.0", features = ["debug-render-2d"] }
+bevy_rapier2d = "0.31.0"
 rand = "0.9.2"
+
+[features]
+dynamic_linking = ["bevy/dynamic_linking"]
+debug_ui = ["bevy_rapier2d/debug-render-2d"]