Add regression test for including derive macros in macro filtering

tests/rustdoc-js-std/filter-macro-attr-derive.js

@@ -0,0 +1,9 @@
+// This test ensures that filtering on "macro" will also include attribute and derive
+// macros.
+
+const EXPECTED = {
+    'query': 'macro:debug',
+    'others': [
+        { 'path': 'std::fmt', 'name': 'Debug', 'href': '../std/fmt/derive.Debug.html' },
+    ],
+};