improve docs around usage of extracted calibration info

[cpsiff]

Added to / modified documentation to make it more clear how to utilize extracted calibration information, and how to verify that the information is being utilized. Also clarified that the robot must be on to extract calibration info.

I added a description of the parameter-passing method, but not the "create your own description package and use that" method. That seemed a little too in-depth and unnecessary for the getting started documentation, when the parameter method will work for most cases. But if I'm missing something, maybe we want to describe the second method as well.

Related issues: #799

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 3.78%. Comparing base (1b121b7) to head (cc90e81).
Report is 373 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #1214      +/-   ##
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+ Coverage   3.59%   3.78%   +0.19%     
========================================
  Files         13     395     +382     
  Lines        947   43457   +42510     
  Branches     152    6397    +6245     
========================================
+ Hits          34    1645    +1611     
- Misses       843   41669   +40826     
- Partials      70     143      +73     

Flag	Coverage Δ
unittests	3.78% <ø> (+0.19%)	⬆️

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[urfeex]

This is looking good now, thank you for your contribution @cpsiff