[Feature Request] revealjs: Ability to choose the level of progressive reveal for `incremental` lists

In revealjs Quarto presentations, you can use .incremental to progressively reveal a list:

::: {.incremental}
* Apple
  * liquid
    * juice
    * cider
  * solid
    * pie
* Banana
  * bread
  * pudding
:::

In the presentation, each item in the list, regardless of its depth in the list, will be revealed one at a time. First Apple, then Apple and liquid, then Apple, liquid and cider, etc.

I've often wanted to have the progressive reveal happen only up to a specific level. For example

::: {.incremental incremental-level=1}
* Apple
  * liquid
    * juice
    * cider
  * solid
    * pie
* Banana
  * bread
  * pudding
:::

Would reveal first Apple along with any of its sub-items and second Banana with it's sub-items. Similarly,

::: {.incremental incremental-level=2}
* Apple
  * liquid
    * juice
    * cider
  * solid
    * pie
* Banana
  * bread
  * pudding
:::

would group anything below the 2nd level list items into a single reveal, so in this case Apple would reveal first, followed by liquid and its sub-items, followed by solid and its sub-items., then the same for Banana.