Add readOrThrow and seekOrThrow to BasicIo

[kevinbackhouse]

readOrThrow and seekOrThrow were previously added as static functions in several sources files because we didn't want to change the header files on the 0.27-maintenance branch. I would like to add them to the API in 1.00.

[codecov]

Codecov Report

Merging #1967 (68473d9) into main (c5101e0) will decrease coverage by 0.02%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main    #1967      +/-   ##
==========================================
- Coverage   61.26%   61.23%   -0.03%     
==========================================
  Files          96       96              
  Lines       19105    19091      -14     
  Branches     9756     9756              
==========================================
- Hits        11705    11691      -14     
  Misses       5079     5079              
  Partials     2321     2321              

Impacted Files	Coverage Δ
include/exiv2/basicio.hpp	80.00% <ø> (ø)
src/image.cpp	64.41% <64.70%> (-0.69%)	⬇️
src/webpimage.cpp	48.81% <80.95%> (-0.60%)	⬇️
src/basicio.cpp	48.96% <100.00%> (+0.56%)	⬆️
src/jpgimage.cpp	69.91% <100.00%> (-0.38%)	⬇️

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[piponazo]

Looks good to me! 👍

[kevinbackhouse]

Thanks @piponazo!

[ghost]

https://github.com/Exiv2/exiv2.git