Add support for java modularity

[onyn]

I have ConsulRegistrationCustomizer bean in my configuration class:

    @Bean
    public ConsulRegistrationCustomizer customizer() {
        return r -> {
            var check = r.getService().getCheck();
        };
    }

My project fails to start with error:

java: org.springframework.cloud.consul.model.http.agent.NewService.getCheck() in package org.springframework.cloud.consul.model.http.agent is not accessible (package org.springframework.cloud.consul.model.http.agent is declared in the unnamed module, but module myproject does not read it)

Jar file spring-cloud-consul-core doesn't contain module-info.class nor Automatic-Module-Name manifest entry.

I know that adding jvm argument --add-reads myproject=ALL-UNNAMED is common workaround. But it will be nice if spring supports modules natively.