chore: checkpoint before Python removal

vendor/wasm-encoder/src/component/components.rs

@@ -0,0 +1,30 @@
+use crate::{Component, ComponentSection, ComponentSectionId, Encode};
+use alloc::vec::Vec;
+
+/// An encoder for the component section of WebAssembly components.
+///
+/// # Example
+///
+/// ```rust
+/// use wasm_encoder::{Component, NestedComponentSection};
+///
+/// let mut nested = Component::new();
+/// let mut component = Component::new();
+/// component.section(&NestedComponentSection(&nested));
+///
+/// let bytes = component.finish();
+/// ```
+#[derive(Clone, Debug)]
+pub struct NestedComponentSection<'a>(pub &'a Component);
+
+impl Encode for NestedComponentSection<'_> {
+    fn encode(&self, sink: &mut Vec<u8>) {
+        self.0.bytes.encode(sink);
+    }
+}
+
+impl ComponentSection for NestedComponentSection<'_> {
+    fn id(&self) -> u8 {
+        ComponentSectionId::Component.into()
+    }
+}