[HTCondor] add wallclock time, limit and server time handling

[fodinabor]

What does this PR do?

This adds attributes to the query for job state so that we get a timer and notification when the job will be out of time.

AllowedExecuteDuration is e.g. 3600 for 1hr jobs.
ServerTime just gives the current time on the HTCondor server so that we can use that as an authoritative reference.

Testing

• Tests included
• No tests included — reason: no HTCondor tests so far....

Checklist

• Follows project code style and conventions
• Documentation provided (if new feature, adapter or behavior change)
• This is a large feature and was discussed in an issue first (if applicable)

We now get this beautiful timer :)

[johrstrom]

Thanks for the fix!