add copyright header

sparse_strips/vello_hybrid/src/render/webgl/resource.rs

diff --git a/sparse_strips/vello_hybrid/src/render/webgl/resource.rs b/sparse_strips/vello_hybrid/src/render/webgl/resource.rs
index 39dff5f..5104805 100644
--- a/sparse_strips/vello_hybrid/src/render/webgl/resource.rs
+++ b/sparse_strips/vello_hybrid/src/render/webgl/resource.rs
@@ -1,3 +1,6 @@
+// Copyright 2026 the Vello Authors
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
 use core::ops::Deref;
 
 use super::{