Support multiple events

[mhalano]

Make swatd support multiple triggers to start one or more events each one. May be use a directory to save various conf files like /etc/swatd.d/{trigger1,trigger2,trigger3}.conf.

[defuse]

This can be done by running multiple instances of swatd at the same time. That's the "right/unix" way to do it, since the alternative is to re-write swatd to simulate itself running N times -- a service the operating system already provides.

I'll leave this ticket open since I might consider it in the future.