Modify Chart Options to allow for configuring stroke-width - resolves issue #3536

[rogue6800]

Description

Adds stroke-width to Chart Options to allow for custom line width on a line chart.

• Resolves issue Chart Line should allow configuring stroke-width #3536

How Has This Been Tested?

Tested visually as the line chart only has limited unit testing currently and implementing more tests is out of the scope of this work.

Checklist:

✔️ The PR is submitted to the correct branch (dev).
✔️ My code follows the code style of this project.
I've added relevant tests.

[codecov]

Codecov Report

Merging #3645 (d3c5834) into dev (3c81cf6) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev    #3645   +/-   ##
=======================================
  Coverage   90.37%   90.37%           
=======================================
  Files         333      333           
  Lines       10487    10487           
=======================================
  Hits         9478     9478           
  Misses       1009     1009           

Impacted Files	Coverage Δ
.../MudBlazor/Components/Chart/Models/ChartOptions.cs	100.00% <ø> (ø)
src/MudBlazor/Components/Chart/Charts/Line.razor	90.00% <100.00%> (ø)

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