Make Http*Getter depend on Net*Getter and deprecate Net*Getters

[mateuszrzeszutek]

We'd like the HTTP getters to extend the getters representing semconvs HTTP depends on. E.g. this is what HttpClientAttributesGetter should look like:

public interface HttpClientAttributesGetter<REQUEST, RESPONSE>
    extends HttpCommonAttributesGetter<REQUEST, RESPONSE>,
    NetClientAttributesGetter<REQUEST, RESPONSE>, // deprecated: to be removed in 2.0
    NetworkAttributesGetter<REQUEST, RESPONSE>,
    ServerAttributesGetter<REQUEST, RESPONSE>

At the same time, we'll deprecate Net*AttributesGetter and all the methods in HTTP semconv that depend on them: create(Http*Getter, Net*Getter) and builder(Http*Getter, Net*Getter).