Queue Column for wt.kit.TimeStamp? Queue Column for Experimentor?

[kameyer226]

Use UID for Index Column? Also add an Experimentor Column to the Queue? (See #64 for reason)

[kameyer226]

wt5_event_model start would contain the callback code that may somehow fit into the Plot Callback (bluesky-cmds >> _plot.py) and then bubble into the queue