Change abstract type Basis to AbstractBasis to be more consistent with our naming convention

[BrianGun]

Pull Request Template

Description

Basis is an abstract type. Our convention has been to name these Abstract(typename). Make this match the convention.

Fixes # (306)

Type of change

• [X ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

name change so existing code that uses Basis will not work.

How Has This Been Tested?

passes all unit tests

Checklist:

• [x ] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code
• [x ] I have commented my code, particularly in hard-to-understand areas
• [x ] I have made corresponding changes to the documentation
• [x ] My changes generate no new warnings
• [x ] I have added tests that prove my fix is effective or that my feature works
• [x ] New and existing unit tests pass locally with my changes
• [x ] Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

[codecov-commenter]

Codecov Report

Merging #307 (5b8c07d) into main (443cc32) will not change coverage.
The diff coverage is 37.50%.

@@           Coverage Diff           @@
##             main     #307   +/-   ##
=======================================
  Coverage   54.53%   54.53%           
=======================================
  Files          78       78           
  Lines        7073     7073           
=======================================
  Hits         3857     3857           
  Misses       3216     3216           

Impacted Files	Coverage Δ
...tical/ParaxialAnalysis/HeadEyeModel/Arrangement.jl	0.00% <0.00%> (ø)
src/RepeatingStructures/HexagonalLattice.jl	46.47% <ø> (ø)
src/RepeatingStructures/Lattice.jl	71.42% <0.00%> (ø)
src/RepeatingStructures/RectangularLattice.jl	20.00% <ø> (ø)
src/RepeatingStructures/Cluster.jl	55.17% <33.33%> (ø)
src/Vis/VisRepeatingStructures.jl	93.02% <100.00%> (ø)

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