[IDEA] How to implement doors

[lzcd]

If I were going to add doors, here's how I would approach it:
https://github.com/lzcd/bbs-door-idea

It contains a unit test which, hopefully, shows how a door would interact with the BBS:
https://github.com/lzcd/bbs-door-idea/blob/main/test_harness.py

I've added the beginnings of a simple tic tac toe door to demonstrate the idea.

If doors were added in this manner then I suspect:

• people could quite easily contribute doors (without disrupting the BBS code)
• a fair bit of current BBS functionality could be moved into doors thereby simplifying the BBS code
• people would have a fun using / playing with doors

Happy to answer any questions if this does sound appealing to you.

Also more than happy to contribute doors (as I have a few ideas rolling around that I'd love to implement).