~muirrum/hakkardrs

Scaffold out room trait
Add quit logic

The `quit` verb is handled as a special case outside of the main verb
code because it needs to be able to drop the player and close the
connection, something that cannot be done within the standard verb
functions.
Remove debugging
Ignore files
Fix login state machine and rework commands

Commands are now parsed as "verbs" that are part of "phrases". Each
phrase can have at most one verb, and it must be the first word of the
phrase. Everything after the verb is considered a noun in terms of
processing and will be passed to the verb function as such.

There is also logic in the `PlayerFile::write()` function that will
create the `./players/` directory if it doesn't already exist.
Resolve errors and move to MPSC architecture
Switch to MPSC architecture
Ignore swap files
Initial Commit