Enhance pynwb validation parsing to report the path within the file, fix pynwb typo

[rly]

re: https://github.com/con/validation/issues/1#issuecomment-2391975295

PyNWB reports a list of HDMF validator Error objects.

• Enhance pynwb validator output to report the path within the file and separate the reason (message) from the rest of the error.
• Fix typo "pywnb" -> "pynwb"

[rly]

Note that NWB inspector runs the pynwb validator and parses its output, so if you run that first, then running the pynwb validator is unnecessary.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.56%. Comparing base (61e28e0) to head (2046eb8). Report is 30 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1513 +/- ## ========================================== - Coverage 88.58% 88.56% -0.02% ========================================== Files 78 78 Lines 10589 10589 ========================================== - Hits 9380 9378 -2 - Misses 1209 1211 +2 ``` | [Flag](https://app.codecov.io/gh/dandi/dandi-cli/pull/1513/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/dandi/dandi-cli/pull/1513/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi) | `88.56% <100.00%> (-0.02%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi#carryforward-flags-in-the-pull-request-comment) to find out more.

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[github-actions[bot]]

:rocket: PR was released in 0.64.0 :rocket: