Vendor dependencies for 0.3.0 release

vendor/bevy_ui/src/widget/label.rs

@@ -0,0 +1,7 @@
+use bevy_ecs::{prelude::Component, reflect::ReflectComponent};
+use bevy_reflect::{std_traits::ReflectDefault, Reflect};
+
+/// Marker struct for labels
+#[derive(Component, Debug, Default, Clone, Copy, Reflect)]
+#[reflect(Component, Default, Debug, Clone)]
+pub struct Label;