Fix placement of lenslet displays

[BrianGun]

Fixes #356

moved replacement of optic center of lenlets before the computation of projected eyeboxes, since the latter depends on the former.

adding more drawing functions to Example.jl so individual parts of system computation can be drawn.

Pull Request Template

Description

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Fixes # (issue)

Type of change

• Bug fix (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)
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How Has This Been Tested?

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• Test B

Test Configuration(s):

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[codecov-commenter]

Codecov Report

Merging #357 (2179107) into main (adc956e) will decrease coverage by 0.10%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #357      +/-   ##
==========================================
- Coverage   52.38%   52.28%   -0.11%     
==========================================
  Files          81       81              
  Lines        7763     7779      +16     
==========================================
  Hits         4067     4067              
- Misses       3696     3712      +16     

Impacted Files	Coverage Δ
src/RepeatingStructures/Multilens/Example.jl	0.00% <0.00%> (ø)
...RepeatingStructures/Multilens/LensletAssignment.jl	0.00% <0.00%> (ø)

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