Define onAuditLog delay (10s) and defaultDelay

[alanbixby]

Currently onAuditLog() references a delay that does not exist, therefore the delay defaults to undefined -> 0.

This causes many individuals to have 429: TooManyRequest errors; theoretically this should alleviate things for a fair number of people.

I've also added defaultDelay to settings.json as a fallback in-case any future event listeners accidentally make this mistake.

[Neztore]

Looks good!
The combined use of a ternary and OR are perhaps and difficult to read, but I think this is mergable regardless.