SpringBoot Develop a more efficient WebResourceSet implementation for nested jars

Currently TomcatServletWebServerFactory.StaticResourceConfigurer changes nested jar URLs so that Tomcat can use them.

Although this works, internally it results in Tomcat using a JarWarResourceSet which is not very efficient. We should be able to create our own WebResourceSet that works directly with the JarURLConnection once #37668 is merged.