refactoring: Start adding some more structure to the arguments for the CLI #538
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This doesn't actually change any functionality, but changes the way the arguments are printed out with
--helpand with invalid args. It does also make it so--port,--host, and--bleare mutually exclusive, which is a bit more accurate.This is also a step along the way as far as hopefully making an easy third-party way of getting a client from some arguments, but as yet it's just refactoring.