Vendor dependencies for 0.3.0 release

vendor/bevy/examples/input/keyboard_modifiers.rs

@@ -0,0 +1,20 @@
+//! Demonstrates using key modifiers (ctrl, shift).
+
+use bevy::prelude::*;
+
+fn main() {
+    App::new()
+        .add_plugins(DefaultPlugins)
+        .add_systems(Update, keyboard_input_system)
+        .run();
+}
+
+/// This system prints when `Ctrl + Shift + A` is pressed
+fn keyboard_input_system(input: Res<ButtonInput<KeyCode>>) {
+    let shift = input.any_pressed([KeyCode::ShiftLeft, KeyCode::ShiftRight]);
+    let ctrl = input.any_pressed([KeyCode::ControlLeft, KeyCode::ControlRight]);
+
+    if ctrl && shift && input.just_pressed(KeyCode::KeyA) {
+        info!("Just pressed Ctrl + Shift + A!");
+    }
+}