Rule suggestion: `vue/require-explicit-slots` to require all slots to be documented

[Amixx]

Please describe what the rule should do:
I would like a rule that requires defineSlots to be present if there are any slots in the component - could be called vue/no-undeclated-slots or something similar. I did not find a rule that does this in the rule list, and did not find a relevant issue.

What category should the rule belong to?
[X] Enforces code style (layout)
[ ] Warns about a potential error (problem)
[ ] Suggests an alternate way of doing something (suggestion)
[ ] Other (please specify:)

Provide 2-3 code examples that this rule should warn about:

<template>
<slot></slot>
</template>

<script setup lang="ts">
// any code, except `defineSlots`
</script>

Additional context
I am sorry if this issue is not submitted correctly, and will fix any errors. I am also willing to try to implement the rule myself if anyone can give me a starting point (maybe a rule that is somewhat similar)

[FloEdelmann]

Sounds good!

For reference, here is the documentation of defineSlots: https://vuejs.org/api/sfc-script-setup.html#defineslots
That should also be included in the rule documentation.

Similar rules:

• https://eslint.vuejs.org/rules/require-explicit-emits.html
• https://eslint.vuejs.org/rules/no-undef-components.html

As a name for the new rule, I'd suggest vue/require-explicit-slots to be consistent with vue/require-explicit-emits.

[Amixx]

Thanks for the quick comment, I will try to implement it over the weekend.

[mussinbenarbia]

@Amixx @FloEdelmann I noticed that there was no PR for this yet so I gave this a try here 🙇 I hope it's ok