Process hOCR textangle attribute

[0dinD]

Fixes #1467

[jbarlow83]

Thank you for this helpful contribution. I may need a few days to review it.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 90.14%. Comparing base (137b054) to head (374b76d).

Files with missing lines	Patch %	Lines
src/ocrmypdf/hocrtransform/_hocr.py	80.00%	1 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1468      +/-   ##
==========================================
- Coverage   90.16%   90.14%   -0.02%     
==========================================
  Files          95       95              
  Lines        7128     7135       +7     
  Branches      729      730       +1     
==========================================
+ Hits         6427     6432       +5     
- Misses        496      497       +1     
- Partials      205      206       +1     

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[0dinD]

Thank you for this helpful contribution. I may need a few days to review it.

Yeah no worries, take your time. Let me know if there's anything on my end regarding testing and so on I should do. I'm new to this codebase and don't really know what commands to run for testing and so on. Right now I have done manual testing with some private PDFs, and also the example I created in #1467.