Add events handling: trace/map + new view for aliggned/rasters + PSTHs

[alejoe91]

Events can be passed to the run_mainwindow either as a dict:

{
    "event_key": {
         "samples": [.....], # or time
    }
}

In case of multi segment, the events must be list of lists/arrays.

Alternatively, one can use a spikeinterface.BaseEvent object.

The Trace/TraceMap views allow to go to previous/next event (and select event type in case of multiple).
A new EventView shows aligned rasters or PSTHs.
Here's how it looks:

event-sigui.webm

• panel Trace/TraceMap

[chrishalcrow]

Woah - one of the postdocs in my lab will love this!

[chrishalcrow]

@alejoe91 I don't think you've commited the eventview

[alejoe91]

done!

[alejoe91]

@chrishalcrow ready to test for real! :)