Merge PR #1055: handle macOS Finder document opens

Cargo.lock

@@ -35,6 +35,9 @@ dependencies = [
  "lyon_tessellation",
  "meshopt",
  "naga 27.0.3",
+ "objc2 0.5.2",
+ "objc2-app-kit 0.2.2",
+ "objc2-foundation 0.2.2",
  "ocs_doc_api",
  "ocs_plugin_api",
  "open",