Feat fix megapose model download and add options to MBT tutorial

[SamFlt]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 51 lines in your changes missing coverage. Please review.

Project coverage is 45.23%. Comparing base (f1b79a1) to head (a447f83).
Report is 7 commits behind head on master.

Files	Patch %	Lines
...ender/tutorial-mb-generic-tracker-rgbd-blender.cpp	0.00%	51 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1428      +/-   ##
==========================================
- Coverage   45.23%   45.23%   -0.01%     
==========================================
  Files        1106     1106              
  Lines      109982   110010      +28     
  Branches    18860    18868       +8     
==========================================
+ Hits        49751    49760       +9     
- Misses      60231    60250      +19     

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