chore: checkpoint before Python removal

vendor/zerocopy/benches/ref_from_prefix_dynamic_padding.rs

@@ -0,0 +1,10 @@
+#[path = "formats/coco_dynamic_padding.rs"]
+mod format;
+
+#[unsafe(no_mangle)]
+fn bench_ref_from_prefix_dynamic_padding(source: &[u8]) -> Option<&format::LocoPacket> {
+    match zerocopy::FromBytes::ref_from_prefix(source) {
+        Ok((packet, _rest)) => Some(packet),
+        _ => None,
+    }
+}