feat(attr-lowercase): ignore camelCase SVG attributes

[nschonni]

Short description of what this resolves:

Sets up the known SVG properties as the baseline to ignore in
Closes #542

Note that maybe this will cause some unintended passing, since it's not restricted to just the SVG elements. Making it more precise might be an alternate approach

[codecov]

Codecov Report

Merging #828 (0147b76) into master (8900d14) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #828   +/-   ##
=======================================
  Coverage   96.44%   96.44%           
=======================================
  Files           1        1           
  Lines         900      901    +1     
  Branches      191      191           
=======================================
+ Hits          868      869    +1     
  Misses         13       13           
  Partials       19       19           

Impacted Files	Coverage Δ
dist/htmlhint.js	96.44% <100.00%> (+<0.01%)	⬆️

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[thedaviddias]

🎉 This PR is included in version 1.1.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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