Ignored plots for phase_transition

[EveCharbie]

I don't think it should be merged since it is really a patch and not a fix.
But this way it is available to others, in the mean time :)

[codecov]

Codecov Report

Merging #433 (15c3db6) into master (61e7951) will decrease coverage by 0.02%.
The diff coverage is 40.00%.

@@            Coverage Diff             @@
##           master     #433      +/-   ##
==========================================
- Coverage   80.21%   80.18%   -0.03%     
==========================================
  Files          83       83              
  Lines        8761     8768       +7     
==========================================
+ Hits         7028     7031       +3     
- Misses       1733     1737       +4     

Impacted Files	Coverage Δ
...tim/examples/getting_started/example_multiphase.py	90.90% <0.00%> (-1.69%)	⬇️
bioptim/optimization/optimal_control_program.py	88.45% <0.00%> (ø)
bioptim/gui/plot.py	76.00% <57.14%> (-0.36%)	⬇️

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[pariterre]

If you do not think it worths merging there is not really a point to PR it, as anyone can still connect to your fork and merge locally even if no PR is open :)

[pariterre]

GG so far! :)

[Ipuch]

ready to merge @pariterre

[pariterre]

LGTM