LibWeb: Add the clip-path property and resolve it for SVG elements

Author: https://github.com/MacDue
Commit: 03f957dc79
Pull-request: https://github.com/SerenityOS/serenity/pull/23736
Issue: https://github.com/SerenityOS/serenity/issues/19648
Issue: https://github.com/SerenityOS/serenity/issues/23006
Reviewed-by: https://github.com/nico

Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.h

@@ -47,6 +47,8 @@ public:
 
     JS::GCPtr<SVG::SVGMaskElement const> mask() const;
 
+    JS::GCPtr<SVG::SVGClipPathElement const> clip_path() const;
+
 protected:
     SVGGraphicsElement(DOM::Document&, DOM::QualifiedName);