feat(v2): q-ignore and q-container-island implementation

[Varixo]

This PR adds the q-ignore and the q-container-island comments.

Example:

<div>interactive content 1</div>
<!--q:ignore=FOO-->
...(ignored)
   <!--q:container-island=BAR-->
   <button on:click="...">some interactive island</button>
   <!--/q:container-island-->
...(ignored)
<!--/q:ignore-->
<div>interactive content 2</div>

[changeset-bot]

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Latest commit: 8a9f681

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