HttpEndpoint should use Akka HTTP's Uri type instead of java.net.URI

HttpEndpoint should use Akka HTTP's Uri type instead of java.net.URI: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). The rest of our stack is built on Akka HTTP, where URIs are represented by akka.http.scaladsl.model.Uri (or akka.http.javadsl.model.Uri on the Java…