Rollup merge of #97990 - GuillaumeGomez:eslint-checks, r=Dylan-DPC

Rollup merge of #97990 - GuillaumeGomez:eslint-checks, r=Dylan-DPC

Add more eslint checks

List of newly added checks:

 * [no-lonely-if](https://eslint.org/docs/rules/no-lonely-if)
 * [no-mixed-operators](https://eslint.org/docs/rules/no-mixed-operators)
 * [no-multi-assign](https://eslint.org/docs/rules/no-multi-assign)
 * [no-return-assign](https://eslint.org/docs/rules/no-return-assign)
 * [no-script-url](https://eslint.org/docs/rules/no-script-url)

r? `@Dylan-DPC`