Add a way to set events/duration/etc. for the next scan point without a configure transition

[ZLLentz]

Expected Behavior

• daq.configure(events=40), etc. when the daq is already configured should queue up that number for the next daq.trigger() without going through a configure transition.
• same for duration

Current Behavior

• Requires a configure transition

Possible Solution

• Modify behavior of configure method based on whether or not we're configured already and which arguments are called.

Context

• Required for various slow cam scans