Fluent concurrency API provided by JacpContext

[amoAHCP]

Provide a CompletableFuture like API to execute tasks and GUI updates. "Abstract" CompletableFuture and reduce API complexity.
My current test implementation is like that:

context.getAsyncHandler().
supplyOnExecutorThread(() -> service.getAllValues()).
functionOnExecutorThread((values) -> values.stream().map(val->new Button(val.toString())).collect(Collectors.toList())).
consumeOnFXThread((buttonList)->node.getChildren().addAll(buttonList)).
.execute();