Add ESLint shared settings to detect React version

[germain-gg]

When running yarn lint we would have the following output

~/dev/element/matrix-react-sdk develop
❯ yarn lint
yarn run v1.22.10
$ yarn lint:types && yarn lint:js && yarn lint:style
$ tsc --noEmit --jsx react
$ eslint --max-warnings 0 src test
Warning: React version not specified in eslint-plugin-react settings. See https://github.com/yannickcr/eslint-plugin-react#configuration .

Looking at the eslint-plugin-react#configuration page, we can see that we should set some ESLint shared settings to automatically detect the installed React version (17.x in our case).
Their example shows a lot more shared settings that do not apply to us as the project does not use any of the tooling it refers to (mobx, pragma, flow, styled-components, ...)

This PR will erase that Warning: in the log output

---

This change is marked as an internal change (Task), so will not be included in the changelog.

Preview: https://612602818d4935a27eeba5ce--matrix-react-sdk.netlify.app
⚠️ Do you trust the author of this PR? Maybe this build will steal your keys or give you malware. Exercise caution. Use test accounts.