feat(eslint-plugin): add rule sort-type-union-intersection-members

[bradzacher]

Pretty straightforward.
For #2911 I was annoyed at having to remember to manually sort every union type.
And going forwards I'd like to validate that they're sorted.

Sorting is great because it makes it super simple to manually verify there's no duplicate types, and it reduces diff churn.

[typescript-eslint]

Thanks for the PR, @bradzacher!

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!

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[codecov]

Codecov Report

Merging #2913 (fdd94d6) into master (4d69fbb) will decrease coverage by 0.00%.
The diff coverage is 92.30%.

@@            Coverage Diff             @@
##           master    #2913      +/-   ##
==========================================
- Coverage   92.76%   92.76%   -0.01%     
==========================================
  Files         310      311       +1     
  Lines       10395    10460      +65     
  Branches     2944     2957      +13     
==========================================
+ Hits         9643     9703      +60     
- Misses        347      348       +1     
- Partials      405      409       +4     

Flag	Coverage Δ
unittest	92.76% <92.30%> (-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/configs/all.ts	100.00% <ø> (ø)
.../src/rules/sort-type-union-intersection-members.ts	92.30% <92.30%> (ø)