Apply misra c++ quality rules mainly to headers

[fspindle]

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[codecov]

Codecov Report

Attention: Patch coverage is 83.71681% with 92 lines in your changes are missing coverage. Please review.

Project coverage is 45.85%. Comparing base (d48b8b4) to head (632b536).
Report is 4 commits behind head on master.

❗ Current head 632b536 differs from pull request most recent head 1056d74. Consider uploading reports for the commit 1056d74 to get more accurate results

Files	Patch %	Lines
modules/core/include/visp3/core/vpImage.h	78.12%	28 Missing ⚠️
modules/core/include/visp3/core/vpGEMM.h	21.21%	26 Missing ⚠️
modules/core/include/visp3/core/vpArray2D.h	85.71%	11 Missing ⚠️
...s/core/include/visp3/core/vpMeterPixelConversion.h	43.75%	9 Missing ⚠️
modules/core/include/visp3/core/vpImageFilter.h	87.93%	7 Missing ⚠️
...s/core/include/visp3/core/vpPixelMeterConversion.h	16.66%	5 Missing ⚠️
modules/core/include/visp3/core/vpRect.h	75.00%	2 Missing ⚠️
...roc/include/visp3/imgproc/vpCircleHoughTransform.h	0.00%	2 Missing ⚠️
modules/core/include/visp3/core/vpImageTools.h	99.28%	1 Missing ⚠️
modules/core/include/visp3/core/vpRowVector.h	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1400      +/-   ##
==========================================
+ Coverage   45.83%   45.85%   +0.01%     
==========================================
  Files        1071     1071              
  Lines      108330   108360      +30     
  Branches    18730    18730              
==========================================
+ Hits        49657    49684      +27     
- Misses      58673    58676       +3     

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