Feat with 3rdparties

[fspindle]

For specific industrial projects, it is useful to deactivate embedded third parties, or even to delete the associated source code completely.

This PR introduce new options (WITH_PUGIXML, WITH_STBIMAGE, WITH_SIMDLIB, WITH_TINYEXR) to this end.

[codecov]

Codecov Report

Attention: 272 lines in your changes are missing coverage. Please review.

Comparison is base (dcfe00a) 54.27% compared to head (9e63de2) 53.76%.
Report is 177 commits behind head on master.

Files	Patch %	Lines
...sion/src/homography-estimation/vpHomographyVVS.cpp	0.00%	78 Missing ⚠️
.../vision/src/homography-estimation/vpHomography.cpp	24.21%	72 Missing ⚠️
.../src/homography-estimation/vpHomographyExtract.cpp	53.48%	40 Missing ⚠️
...n/src/homography-estimation/vpHomographyRansac.cpp	50.87%	28 Missing ⚠️
modules/tracker/mbt/src/edge/vpMbEdgeTracker.cpp	15.78%	16 Missing ⚠️
...sion/src/homography-estimation/vpHomographyDLT.cpp	83.78%	12 Missing ⚠️
modules/tracker/mbt/src/klt/vpMbKltTracker.cpp	30.00%	7 Missing ⚠️
...s/tracker/mbt/src/depth/vpMbDepthNormalTracker.cpp	50.00%	5 Missing ⚠️
...on/src/homography-estimation/vpHomographyMalis.cpp	95.49%	5 Missing ⚠️
...es/tracker/mbt/src/depth/vpMbDepthDenseTracker.cpp	33.33%	4 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1292      +/-   ##
==========================================
- Coverage   54.27%   53.76%   -0.52%     
==========================================
  Files         400      400              
  Lines       50658    50862     +204     
==========================================
- Hits        27497    27347     -150     
- Misses      23161    23515     +354     

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