Isort and mypy tidyup

[shimwell]

Proposed changes

Using python packages isort and mypy to tidy up the import statements and the type hinting. This PR reduces the number of mypy warnings originating from the paramak source code

Types of changes

• 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

• 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)

[codecov]

Codecov Report

Merging #122 (4180323) into develop (c2a595c) will increase coverage by 0.17%.
The diff coverage is 98.41%.

@@             Coverage Diff             @@
##           develop     #122      +/-   ##
===========================================
+ Coverage    97.57%   97.75%   +0.17%     
===========================================
  Files           76       76              
  Lines         4703     4675      -28     
===========================================
- Hits          4589     4570      -19     
+ Misses         114      105       -9     

Impacted Files	Coverage Δ
...ric_components/blanket_constant_thickness_arc_v.py	100.00% <ø> (ø)
.../parametric_components/blanket_cutter_parallels.py	100.00% <ø> (ø)
...ak/parametric_components/center_column_cylinder.py	100.00% <ø> (ø)
...tric_components/center_column_flat_top_circular.py	100.00% <ø> (ø)
...ric_components/center_column_flat_top_hyperbola.py	100.00% <ø> (ø)
...k/parametric_components/center_column_hyperbola.py	100.00% <ø> (ø)
...etric_components/center_column_plasma_dependant.py	100.00% <ø> (ø)
...rametric_components/coolant_channel_ring_curved.py	100.00% <ø> (ø)
...metric_components/coolant_channel_ring_straight.py	100.00% <ø> (ø)
paramak/parametric_components/cutting_wedge.py	100.00% <ø> (ø)
... and 43 more

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