Add jacobian transform error calculation function

[Levi-Armstrong]

No description provided.

[codecov]

Codecov Report

Merging #971 (579a42f) into master (985e4c0) will increase coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #971   +/-   ##
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  Coverage   90.93%   90.93%           
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  Files         280      280           
  Lines       15848    15851    +3     
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+ Hits        14411    14414    +3     
  Misses       1437     1437           

see 3 files with indirect coverage changes

[marrts]

This works for me, should probably duplicate or make a slightly modified version of the unit tests for calcTransformError in tesseract_common_unit.cpp

tesseract/tesseract_common/test/tesseract_common_unit.cpp

Line 2114 in 985e4c0

TEST(TesseractCommonUnit, calcTransformError) // NOLINT