Adding colour to jupyter cadquery show

[shimwell]

Proposed changes

This PR adds color to the .show property of jupyter cadquery as originally show in https://github.com/bernhard-42/jupyter-cadquery/issues/39 thanks @bernhard-42

Parametric Shapes have all been assigned default colors based on the original color brewer selection https://colorbrewer2.org/#type=qualitative&scheme=Paired&n=12

Additionally seperate shapes can be switched on or of using the eye ball logo on the left hand side

TODO

• [x] Check use of color within the code to see if RGB can be 0->255 or 0->1
• [x] Add default colors for the components used in the Reactors to make them look like the pictures
• [x] Add tests for h5m to vtk function use in Shape and Reactor classes

Before

After

Types of changes

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• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Code refactoring
• [ ] Documentation Update (if none of the other choices apply)
• [ ] New tests

Checklist

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• [ ] Pep8 applied
• [ ] Unit tests pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

Further comments

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[shimwell]

Also removes from openmc import geometry from Reactor.py which might have caused #800

[codecov[bot]]

Codecov Report

Merging #798 (a6966fc) into develop (3a9a910) will decrease coverage by 0.01%. The diff coverage is 89.47%.

@@             Coverage Diff             @@
##           develop     #798      +/-   ##
===========================================
- Coverage    95.34%   95.33%   -0.02%     
===========================================
  Files           74       74              
  Lines         5182     5251      +69     
===========================================
+ Hits          4941     5006      +65     
- Misses         241      245       +4     

Impacted Files	Coverage Δ
.../parametric_components/poloidal_field_coil_case.py	100.00% <ø> (ø)
...tric_components/toroidal_field_coil_coat_hanger.py	100.00% <ø> (ø)
...metric_components/toroidal_field_coil_rectangle.py	100.00% <ø> (ø)
...etric_components/toroidal_field_coil_triple_arc.py	100.00% <ø> (ø)
paramak/parametric_reactors/ball_reactor.py	100.00% <ø> (ø)
...parametric_reactors/center_column_study_reactor.py	100.00% <ø> (ø)
...aramak/parametric_reactors/eu_demo_2015_reactor.py	100.00% <ø> (ø)
paramak/parametric_reactors/sparc_paper_2020.py	100.00% <ø> (ø)
paramak/parametric_reactors/submersion_reactor.py	99.05% <ø> (ø)
paramak/parametric_shapes/sweep_circle_shape.py	100.00% <ø> (ø)
... and 24 more

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