Adding camera calibration tutorial

[annacasto]

Describe your changes Added a tutorial for the checkerboard calibration and camera calibration functions.

Type of update Is this a:

• Update to documentation

Associated issues Reference associated issue numbers. Does this pull request close any issues?

Additional context Add any other context about the problem here.

For the reviewer See this page for instructions on how to review the pull request.

• [ ] PR functionality reviewed in a Jupyter Notebook
• [x] All tests pass
• [x] Test coverage remains 100%
• [x] Documentation tested
• [ ] New documentation pages added to plantcv/mkdocs.yml
• [ ] Changes to function input/output signatures added to updating.md
• [x] Code reviewed
• [x] PR approved

[deepsource-io[bot]]

Here's the code health analysis summary for commits 1d16aab..cd47354. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Python	✅ Success		View Check ↗
Test coverage	✅ Success		View Check ↗

Code Coverage Report

Metric	Aggregate	Python
Branch Coverage	100%	100%
Composite Coverage	99.7%	99.7%
Line Coverage	99.7%	99.7%

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[annacasto]

Thanks! I fixed typos and added a line about minimum checkerboard size.

[nfahlgren]

Looks great, could we add the GitHub and Colab buttons here like we started doing on the newer tutorials? Example here: https://plantcv.readthedocs.io/en/latest/tutorials/kmeans_clustering_tutorial/

[annacasto]

Just added those new buttons!