feat: It can rotate now + refactor + css styling changes

[mithi]

• Hexapod has the ability to rotate now
• Add new optional parameters in getWalkSequence and VirtualHexapod constructor
• Update css styles
• Refactors of walking gaits page to improve readability

[codecov[bot]]

Codecov Report

Merging #119 into master will decrease coverage by 1.48%. The diff coverage is 19.60%.

@@            Coverage Diff             @@
##           master     #119      +/-   ##
==========================================
- Coverage   76.89%   75.40%   -1.49%     
==========================================
  Files          55       55              
  Lines        1402     1427      +25     
  Branches      157      167      +10     
==========================================
- Hits         1078     1076       -2     
- Misses        286      303      +17     
- Partials       38       48      +10     

Impacted Files	Coverage Δ
src/App.js	86.36% <0.00%> (ø)
src/components/pages/InverseKinematicsPage.js	55.55% <ø> (ø)
src/components/pages/LegPatternPage.js	57.89% <ø> (ø)
src/components/pages/WalkingGaitsPage.js	7.92% <1.26%> (-1.29%)	:arrow_down:
src/hexapod/VirtualHexapod.js	72.61% <66.66%> (-0.56%)	:arrow_down:
src/hexapod/solvers/walkSequenceSolver.js	95.37% <85.71%> (-1.75%)	:arrow_down:
src/components/DimensionsWidget.js	64.00% <100.00%> (-2.67%)	:arrow_down:
src/components/Nav.js	100.00% <100.00%> (ø)
src/components/generic/Slider.js	88.88% <100.00%> (ø)
src/components/pages/ForwardKinematicsPage.js	75.00% <100.00%> (-4.17%)	:arrow_down:
... and 1 more

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