feat(eslint-plugin): [no-floating-promises] add suggestion fixer to add an 'await'

[sena-anny]

PR Checklist

• Addresses an existing open issue: fixes Enhancement: [no-floating-promises] Add suggestion fixer to add an 'await' #5924
• That issue was marked as accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Add suggestion fixer to add an 'await'

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[typescript-eslint]

Thanks for the PR, @sena-anny!

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 #5943 (7bf32b6) into main (3ce2549) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5943      +/-   ##
==========================================
+ Coverage   91.27%   91.28%   +0.01%     
==========================================
  Files         366      366              
  Lines       12433    12445      +12     
  Branches     3641     3645       +4     
==========================================
+ Hits        11348    11361      +13     
+ Misses        774      773       -1     
  Partials      311      311              

Flag	Coverage Δ
unittest	91.28% <100.00%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
...es/eslint-plugin/src/rules/no-floating-promises.ts	100.00% <100.00%> (ø)
...es/eslint-plugin/src/util/getOperatorPrecedence.ts	42.85% <0.00%> (+2.85%)	⬆️

[JoshuaKGoldberg]

A good start, thanks for sending this in @sena-anny! 🙌

Requesting changes on a bit more test coverage, and reducing the area replaced.

[JoshuaKGoldberg]

So close! 🙌

Will defer to bradzacher's review :)

[sena-anny]

@bradzacher
Could you check this PR?

[bradzacher]

with the precedence fixes, this LGTM!
Thanks for adding a fixer!