Migrate to ESLint's flat config

[connor-baer]

Addresses WBPL-408.

Purpose

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Approach and changes

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Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests

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⚠️ No Changeset found

Latest commit: e277e35

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[codecov]

Codecov Report

Attention: Patch coverage is 5.07343% with 711 lines in your changes missing coverage. Please review.

Project coverage is 25.02%. Comparing base (904b0e8) to head (c4dd17c).
Report is 8 commits behind head on next.

Files with missing lines	Patch %	Lines
src/configs/eslint/javascript.ts	0.00%	326 Missing and 1 partial ⚠️
src/configs/eslint/typescript.ts	0.00%	97 Missing and 1 partial ⚠️
src/configs/eslint/files.ts	1.72%	57 Missing ⚠️
src/configs/eslint/next.ts	0.00%	55 Missing and 1 partial ⚠️
src/configs/eslint/react.ts	0.00%	52 Missing and 1 partial ⚠️
src/configs/eslint/node.ts	0.00%	23 Missing and 1 partial ⚠️
src/configs/eslint/open-source.ts	0.00%	18 Missing and 1 partial ⚠️
src/configs/eslint/config.ts	0.00%	18 Missing ⚠️
src/configs/eslint/browser.ts	0.00%	15 Missing and 1 partial ⚠️
src/configs/eslint/tests.ts	0.00%	14 Missing and 1 partial ⚠️
... and 3 more

Additional details and impacted files

@@             Coverage Diff             @@
##             next    #1066       +/-   ##
===========================================
- Coverage   66.72%   25.02%   -41.70%     
===========================================
  Files          29       40       +11     
  Lines        1665     1690       +25     
  Branches      150      111       -39     
===========================================
- Hits         1111      423      -688     
- Misses        539     1241      +702     
- Partials       15       26       +11     

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[pkg-pr-new]

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npm i https://pkg.pr.new/sumup-oss/foundry/@sumup-oss/foundry@1066

commit: e277e35