Add timestamps to controller logs

[confluence]

It's currently difficult to decipher when logged events happened -- the names of the backend logs provide the only frame of reference.

[daikema]

I think that this is largely due to direct use of console.log for logging purposes.

This could be resolved by including something like log-timestamp or console-stamp, though each would, I think, require a one-line change to basically all our Typescript files.

Or we could move to a different logging framework like, e.g., tslog though I think that'd require few more changes I'd guess.

(Assume we need some input from, e.g., at least @veggiesaurus as to what we should be doing here).

[veggiesaurus]

If we're using PM2 we can just add timestamps to the log there. Would that be sufficient?

[veggiesaurus]

If not, I'd suggest we move to tslog, it's pretty great

[daikema]

So for now we seem to have adopted running pm2 with --log-date-format 'DD-MM HH:mm:ss.SSS' as per @veggiesaurus's suggestion, so think this one is likely gonna be getting backburnered. Should we be updated the docs with a mention of this timestamping approach?

[daikema]

Completed in #229