Orchestration code (mostly endpoints for probes) was intended as a
seperate plugin, but given the tight tying of asynchronous dependency
code, it has been included in this history and will likely be branched
off as a dedicated repo not available for non client/server
architectures.
much of the execution wrapping code has been moved into a wrapper on
execute instead of recursive executed. This cleans up logic and fixes
issues with collecting all outputs when multiple output nodes exist
