[middlewares] Add `timestamp` option to logger

Would be great if the logger could have an option to print out the timestamp via timestamp property.

something like

app.use(logger({ timestamp: { format: 'MM:SS' } }))

and then

08:23:12 GET / 200 OK

I’m thinking of this option:

format: string 

Probably could be consumed by some date library and then transformed into a timestamp

[Arnovsky]

I would like to take this issue if possible, would adding a dependency (something like day.js) for handling formatting of dates be acceptable?

Shouldn’t time-stamping be a default behavior as-well?

[KalebMills]

output [unit of time] is somewhat ambiguous. Are these options attempting to achieve time formatting? If so, would it not be better to pass something like format: 'HH:MM:SS', which can be parsed and output as such?