Support for `HTMLDialogElement` methods `show`, `showModal` and `close`.

[timothee-haudebourg]

Feature Request

Currently we can build a dialog element but not control it with the standard (but arguably not stable) HTMLDialogElement methods: show, showModal and close.

We can't either capture the HTMLDialogElement-specific events: close and cancel. The former is already covered by #2962.

Implement Suggestion

I don't know much about dioxus's architecture, but I imagine this could be provided through the MountedData object provided with onmount.