add internal server proxy mechanism, add as option to systems, if set ships will jump to remote server when jumping to system
work in progress: add example using distributed servers

Everything is working up to and including first jump.

Client crashes when issuing call after connecting to server
on arrival in remote system.

Possibly due to location or jump gate issues
reuse existing ship handle in distributed client runner
add motel::delete_location rjr method

Delete isn't ideal but provides an interim solution that works
for jumping ships between servers
utilize motel::delete_location to round out distributed ship movement

The distributed example now works end to end and ships can jump
between systems running on different omega servers
fixes to support latest rjr/json gems

Mostly to use new safe json parsing mechanism
fix to manufactured::create_entity: delete location if created but entity could not be added to registry
swap reordering of system / target location retrieval in manufactured::move
update / remove some comments