Vendor dependencies for 0.3.0 release

vendor/bevy_reflect/src/serde/ser/serializable.rs

@@ -0,0 +1,19 @@
+use alloc::boxed::Box;
+use core::ops::Deref;
+
+/// A type-erased serializable value.
+pub enum Serializable<'a> {
+    Owned(Box<dyn erased_serde::Serialize + 'a>),
+    Borrowed(&'a dyn erased_serde::Serialize),
+}
+
+impl<'a> Deref for Serializable<'a> {
+    type Target = dyn erased_serde::Serialize + 'a;
+
+    fn deref(&self) -> &Self::Target {
+        match self {
+            Serializable::Borrowed(serialize) => serialize,
+            Serializable::Owned(serialize) => serialize,
+        }
+    }
+}