📎 Implement lint/noUselessElse - eslint/no-else-return

[Conaclos]

Description

Implement ESLint rule no-else-return

I propose extending the rule to report the following cases

  if () {
    f()
    break;
  }
- else {
    ...
- }
}

  if () {
    f()
    continue;
  }
- else {
    ...
- }
}

  if () {
    f()
    return;
  }
- else {
    ...
- }
}

  if () {
    f()
    break
  }
- else {}
}

The rule could thus be named noUselessElse.
The rule should also cover else if and could provide a safe fix.

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[Conaclos]

Implemented in #331.