Implement an ObjectStorageStreamingFileUpload

[alvarosanchez]

The idea would be that the transferTo() method could use the new URI formats from #112:

public Publisher<HttpResponse<String>> upload(ObjectStorageStreamingFileUpload upload){
    Publisher<Boolean> uploadPublisher = file.transferTo("public-image://www/uploads/" + upload.getFilename());
    return Mono.from(uploadPublisher)  
        .map(success -> {
            if (success) {
                return HttpResponse.ok("Uploaded");
            } else {
                return HttpResponse.<String>status(CONFLICT)
                                   .body("Upload Failed");
            }
        });
}

[scprek]

Any progress on this? Looks like implementation specific solutions going out? #424 (comment)