Add type to container html repr

[h-mayorquin]

As discussed with @rly @stephprince and @rly

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.44%. Comparing base (a90f8ed) to head (91780c9).
⚠️ Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1355   +/-   ##
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  Coverage   92.44%   92.44%           
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  Files          42       42           
  Lines        9742     9747    +5     
  Branches     1978     1979    +1     
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+ Hits         9006     9011    +5     
  Misses        462      462           
  Partials      274      274           

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[rly]

@h-mayorquin could you please resolve the conflicts?

Why exclude top-level fields? I think it's useful, e.g., for the Units and Electrodes tables.

The html repr is really about how the file is represented in memory in Python, as opposed to on-disk (for example, the "general" group is not shown). In almost all cases, the objects in the repr correspond to PyNWB/HDMF classes, and those match the neurodata type. In rare cases, they might deviate, e.g., when a class with a different name from the data type is mapped to the data type. Could we just use the class name instead of the data type name?

[h-mayorquin]

Why exclude top-level fields? I think it's useful, e.g., for the Units and Electrodes tables.

I was looking at the trials and epochs that are also inside an intervals accessor at the top level and inferring wrongly that there all the top level things are just general containers (e.g. acquisition, processing, intervals, etc). But then, we have units and electrodes that are not like this so I guess let's just always display this.

[h-mayorquin]

@rly I modified the code to match the suggestions.