📎 Implement `lint/noExclusiveTests` - `eslint-plugin-jest/no-focused-tests`, `eslint-plugin-mocha/no-exclusive-tests`, `eslint-plugin-no-only-tests`

[Conaclos]

Description

Implement no-focused-tests / no-exclusive-tests / no-only-test.

I think we could restrict the rule to test.only, describe.only and it.only.

Want to contribute? Lets you know you are interested! We will assign you to the issue to prevent several people to work on the same issue. Don't worry, we can unassign you later if you are no longer interested in the issue! Read our contributing guide and analyzer contributing guide.

This was proposed by @emab.