Add Blender scripts for camera views sampling and features extraction

[s-trinh]

Experimentation with using Blender for automatic camera viewpoints sampling and SIFT extraction for "automatic pose computation":

Robustness will of course depends on the quality of the SIFT matching (viewpoint, illumination change, ...).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.41%. Comparing base (d7ea8ac) to head (4b9c610).
Report is 24 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1454      +/-   ##
==========================================
- Coverage   45.42%   45.41%   -0.01%     
==========================================
  Files        1110     1110              
  Lines      110528   110528              
  Branches    18926    18925       -1     
==========================================
- Hits        50208    50198      -10     
- Misses      60320    60330      +10     

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