[code-infra] Move away from eslint config airbnb

[brijeshb42]

Build our own config based on the same presets

[oliviertassinari]

Makes sense, it's not used as much as it used to by the community:

• Before: https://npm-stat.com/charts.html?package=eslint-config-airbnb&package=eslint&from=2016-08-11&to=2020-08-11
• Now: https://npm-stat.com/charts.html?package=eslint-config-airbnb&package=eslint&from=2024-08-11&to=2025-08-11

[github-actions]

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