winemac: Support CFSTR_SHELLURLW (UniformResourceLocator) clipboard format, mapped to public.url.

dlls/winemac.drv/clipboard.c

@@ -208,6 +208,7 @@ static const struct
     { wszJFIF,              CFSTR("public.jpeg"),                           import_clipboard_data,          export_clipboard_data },
     { wszPNG,               CFSTR("public.png"),                            import_clipboard_data,          export_clipboard_data },
     { wszHTMLFormat,        CFSTR("public.html"),                           import_clipboard_data,          export_clipboard_data },
+    { CFSTR_SHELLURLW,      CFSTR("public.url"),                            import_utf8_to_text,            export_text_to_utf8 },
 };
 
 /* The prefix prepended to an external Mac pasteboard type to make a Win32 clipboard format name. org.winehq.mac-type. */