Add plots of cp ct cq and regulation trajectory

[ptrbortolotti]

Add plots of cp ct cq and regulation trajectory to one example to share this possibility

Purpose

These are useful plots while debugging

Type of change

What types of change is it?
Select the appropriate type(s) that describe this PR

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Just a couple of plots

Checklist

Put an x in the boxes that apply.

• I have run existing tests which pass locally with my changes
• I have added new tests or examples that prove my fix is effective or that my feature works
• I have added necessary documentation

[dzalkind]

I love a good plot!

[gbarter]

Plot examples are great!

Would this still work in a terminal such as on Eagle? Other WISDEM examples with plots we hide behind a plot_flag that is set by default =False to avoid any non-graphical terminal issues. Seems like this made it through the tests okay though.