add lick statistics to trial by trial metrics

[alexpiet]

Migrate from process_nwb.py, but need to assign df_licks (maybe df_events) based on gocue to gocue time, not start/stop time

• n_licks_left (# of left licks in response window)
• n_licks_left_total (# of left licks from goCue to next go cue)
• n_licks_right
• n_licks_right_total
• n_licks
• n_licks_total
• n_intertrial_choices (how many licking bouts other than cue response)
• n_intertrial_switches (how many intertrial choices are switches)
• choice_repeat (True if cue response was repeat, False if switch)
• trial duration (stop-time - start-time)
• more here (https://github.com/AllenNeuralDynamics/aind-foraging-behavior-bonsai-basic/blob/5bd0db90bf9182a969bcb3c52af77c8bb9a36f19/code/process_nwbs.py#L87-L93)