Support starting an nREPL server

[zane]

• Depends on Lazy loading of occasionally needed code #23.

obb should support starting an nREPL server, presumably via obb nrepl-server for parity with bb, nbb.

[borkdude]

@zane I think we should implement this as the next big feature for obb.

It should be relatively straightforward to borrow code from nbb. I basically copied over the implementation to joyride as well.

[borkdude]

I think joyride is now the closest equivalent (since the code in both joyride and obb is evaluated synchronously) but I'm blocked on how to start a socket server in a JXA environment.

If someone can point me to how to do a similar thing like this in JXA:

https://github.com/BetterThanTomorrow/joyride/blob/7845ea3262dd20f16c12d7eb207fb05d07c3486b/src/joyride/nrepl.cljs#L253-L260

then I'm willing to invest a couple of hours getting an nREPL thing working for obb.

[borkdude]

Perhaps some useful information in here: https://rderik.com/blog/building-a-server-client-aplication-using-apple-s-network-framework/