[MRG] Add support for Inventory QR

[scaramallion]

Reference issue

• Add support for Inventory QR, closes Add support for Inventory QR #879
• Fix coverage report not being generated (?)

Tasks

• Unit tests added that reproduce issue or prove feature is working
• Fix or feature added
• Documentation and examples updated (if relevant)
• Unit tests passing and coverage at 100% after adding fix/feature
• Type annotations updated and passing with mypy

[codecov]

Codecov Report

Merging #887 (d71e4f4) into main (081392d) will increase coverage by 100.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           main      #887        +/-   ##
===========================================
+ Coverage      0   100.00%   +100.00%     
===========================================
  Files         0        28        +28     
  Lines         0      8663      +8663     
===========================================
+ Hits          0      8663      +8663     

Files	Coverage Δ
pynetdicom/association.py	100.00% <ø> (ø)
pynetdicom/service_class.py	100.00% <100.00%> (ø)
pynetdicom/sop_class.py	100.00% <100.00%> (ø)

... and 25 files with indirect coverage changes