Add behavior tutorial

[weiglszonja]

Motivation

Create a new tutorial that demonstrates how to use the behavior module for adding behavior data to an NWB File.

The behavioral tutorial covers the following neurodata types:

• SpatialSeries
• Position
• CompassDirection
• BehavioralTimeSeries
• BehavioralEvents
• BehavioralEpochs
• PupilTracking
• EyeTracking

resolves #1456

Checklist

• Did you update CHANGELOG.md with your changes?
• Have you checked our Contributing document?
• Have you ensured the PR clearly describes the problem and the solution?
• Is your contribution compliant with our coding style? This can be checked running flake8 from the source directory.
• Have you checked to ensure that there aren't other open Pull Requests for the same change?
• Have you included the relevant issue number using "Fix #XXX" notation where XXX is the issue number? By including "Fix #XXX" you allow GitHub to close issue #XXX when the PR is merged.

[codecov]

Codecov Report

Merging #1464 (0892d10) into dev (2973aeb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #1464   +/-   ##
=======================================
  Coverage   77.47%   77.47%           
=======================================
  Files          37       37           
  Lines        2735     2735           
  Branches      455      455           
=======================================
  Hits         2119     2119           
  Misses        535      535           
  Partials       81       81           

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[oruebel]

Overall this looks good. I added a few very minor comments, but otherwise this looks good to me. Thanks for putting this tutorial together!

[weiglszonja]

Thank you @oruebel and @bendichter for the suggestions, I incorporated them.

[oruebel]

Looks good to me 👍

[oruebel]

@bendichter good to merge?

[bendichter]

looks good to me!