feat(eslint-plugin): [dot-notation] add allowProtectedClassPropertyAccess option

[a-tarasyuk]

Fixes #2610

[typescript-eslint]

Thanks for the PR, @a-tarasyuk!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

---

🙏 Please, if you or your company is finding typescript-eslint valuable, help us sustain the project by sponsoring it transparently on https://opencollective.com/typescript-eslint. As a thank you, your profile/company logo will be added to our main README which receives thousands of unique visitors per day.

[codecov]

Codecov Report

Merging #2622 into master will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2622      +/-   ##
==========================================
- Coverage   92.84%   92.83%   -0.01%     
==========================================
  Files         294      294              
  Lines        9657     9661       +4     
  Branches     2709     2712       +3     
==========================================
+ Hits         8966     8969       +3     
  Misses        326      326              
- Partials      365      366       +1     

Flag	Coverage Δ
#unittest	92.83% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/eslint-plugin/src/rules/dot-notation.ts	84.21% <ø> (-2.46%)	⬇️

[bradzacher]

ezpz - thanks for doing this!