Add plotting tutorials to the main tutorials branch

[luisaFelixSalles]

Add new plot tutorials to the plotting section:

List of tutorials:

• Plotting meshes
• Plotting deformed meshes
• Plotting data on the mesh
• Plotting data on the deformed mesh
• Plotting data on specific path
• Plotting data on geometry elements
• Plotting a graph

Preview on how it renders

Plotting section main page

Plotting meshes

Plotting deformed meshes

Plotting data on the mesh

Plotting data on the deformed mesh

Plotting data on specific path

Plotting data on geometry elements

Plotting a graph

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.44%. Comparing base (627c2de) to head (27050fd).
Report is 11 commits behind head on doc/new-tutorials-section.

Additional details and impacted files

@@                      Coverage Diff                      @@
##           doc/new-tutorials-section    #1903      +/-   ##
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- Coverage                      88.50%   88.44%   -0.07%     
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  Files                             89       89              
  Lines                          10251    10251              
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- Hits                            9073     9066       -7     
- Misses                          1178     1185       +7