chore: update ESLint, migrate configuration file

[arnautov-anton]

🎯 Goal

Time to UPGRADE and migrate. :)

PR is divided into multiple commits, ESLint changes, Prettier changes and manual changes - we can drop Prettier changes for master merges (so that I don't have to deal with merge conflicts) and merge this PR once our PR backlog is somewhat empty.

Notable Changes

• changed CI to run on Node@lts/* instead of v16 and v18
• adjusted bundle-cjs.mjs and getPackageVersion.mjs to use import for package.json instead (with assertion)
• reduced Prettier print-width to 90 (from 100, default is 80) as some new formattings are just weird
• omitted eslint-plugin-prettier as Prettier format step is included in CI anyway
• explicitly installed @testing-library/dom as it's required by our tests and is no longer installed with eslint-plugin-jest-dom
• noUnusedParameters and noUnusedLocals (tsconfig.json) are now set to false to not fail build steps, developers are still warned through ESLint
• omitted certain other plugins since those weren't used apparently, compare against these old configs - generated against Attachment.test.js and against Attachment.tsx

[codecov]

Codecov Report

Attention: Patch coverage is 79.61310% with 137 lines in your changes missing coverage. Please review.

Project coverage is 80.84%. Comparing base (a4d6d83) to head (616e877).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/components/Channel/Channel.tsx	74.75%	25 Missing and 1 partial ⚠️
src/components/Channel/channelState.ts	70.45%	10 Missing and 3 partials ⚠️
...omponents/ChannelList/hooks/useChannelListShape.ts	64.28%	5 Missing ⚠️
src/components/ChannelPreview/utils.tsx	37.50%	5 Missing ⚠️
src/components/Channel/utils.ts	71.42%	4 Missing ⚠️
...mponents/ChannelList/hooks/usePaginatedChannels.ts	20.00%	1 Missing and 3 partials ⚠️
src/components/MediaRecorder/transcode/wav.ts	20.00%	4 Missing ⚠️
src/components/Attachment/attachment-sizing.tsx	40.00%	3 Missing ⚠️
src/components/AutoCompleteTextarea/Textarea.jsx	62.50%	3 Missing ⚠️
...nts/ChannelList/hooks/useChannelUpdatedListener.ts	0.00%	3 Missing ⚠️
... and 45 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2574      +/-   ##
==========================================
- Coverage   81.06%   80.84%   -0.22%     
==========================================
  Files         450      450              
  Lines        9505     9631     +126     
  Branches     2233     2297      +64     
==========================================
+ Hits         7705     7786      +81     
- Misses       1684     1725      +41     
- Partials      116      120       +4     

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[oliverlaz]

Awesome stuff! Thanks for taking care of this long overdue upgrade!

[stream-ci-bot]

🎉 This PR is included in version 12.11.0 🎉

The release is available on:

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

Your semantic-release bot 📦🚀