* Adds ServiceInstanceListSuppliers.java with Builder * Implement TODOs. * Add javadocs. * Remove unused type. * Add test. * Safer caching config: resolve LoadBalancerCacheManager lazily. Return delegate if LoadBalancerCacheManager not available. * Switch to using builder in LoadBalancerClientConfiguration. * Autoformatting with spring-java-format. * Update docs. Co-authored-by: Spencer Gibb <spencer@gibb.us>