feat(eslint-plugin): [member-ordering] add index signature

[sveyret]

Issue #1186 Add the index signature to ordering analysis.

[typescript-eslint]

Thanks for the PR, @sveyret!

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 #1190 into master will decrease coverage by 0.07%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master    #1190      +/-   ##
==========================================
- Coverage   94.01%   93.93%   -0.08%     
==========================================
  Files         131      131              
  Lines        5797     5804       +7     
  Branches     1638     1639       +1     
==========================================
+ Hits         5450     5452       +2     
- Misses        186      188       +2     
- Partials      161      164       +3

Impacted Files	Coverage Δ
...ackages/eslint-plugin/src/rules/member-ordering.ts	92.3% <100%> (-5.03%)	⬇️
packages/eslint-plugin/src/util/misc.ts	86.2% <75%> (-1.8%)	⬇️

[sveyret]

Coverage lowering is due to lines that should normally never be reached.

[sveyret]

@bradzacher, is there still something I should do or shall I just wait for review?

[bradzacher]

It's in the queue of PRs to review.
Sit tight, and we'll get around to it soon enough.

[bradzacher]

LGTM - thanks for this.