AAFReader: Added kind support for auxiliary AAF tracks (#28)

[timlehr]

Fixes #28

Description

Makes sure non audio / video tracks get a kind string assigned. I added an AAF_ prefix, followed by the AAF track kind.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0c480e0) 90.15% compared to head (951e3af) 90.15%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #27   +/-   ##
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  Coverage   90.15%   90.15%           
=======================================
  Files           3        3           
  Lines        1107     1107           
=======================================
  Hits          998      998           
  Misses        109      109           

Flag	Coverage Δ
unittests	90.15% <100.00%> (ø)

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Files	Coverage Δ
..._aaf_adapter/adapters/advanced_authoring_format.py	85.93% <100.00%> (ø)

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[reinecke]

For reference, here are the DataDefs that drive the media kind that's used from @markreidvfx

[timlehr]

@reinecke @markreidvfx added a test for this change.

[reinecke]

LGTM - But I'll let @markreidvfx have the final 👍 since he's more deeply familiar with the adapter.

[timlehr]

@markreidvfx any opinion on this?

[markreidvfx]

sorry for the delay. LGTM.

Something to be aware of is that media_kind could have spaces in it. I've seen it be inconsistent between AAF files, namely with the Descriptive Metadata media_kind for markers. This is would be more of issue for the AAF writer.

[jminor]

From meeting discussion: everyone seems okay with landing this.