feat(useHotKey): add composable for keyboard shortcuts

[Antreesy]

☑️ Resolves

Moved from nextcloud/spreed#12698

Add a new useHotKey composable with respect Nextcloud Accessibility setting
Available modifiers:

• ctrl: Ctrl key is required
• alt: Alt key is required
• shift: Shift key is required
• prevent: Prevent default action
• stop: Stop propagation
• push: Trigger on keydown and keyup

🖼️ Screenshots

🚧 Tasks

• Define list of interactive elements

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable
• 3️⃣ Backport to next requested with a Vue 3 upgrade

[ShGKme]

What about making it less a vueuse function wrapper, but more a specifically "hot keys" utility so that:

• explicitly mark it as an utility for hotkeys
• do not rely on vueuse and change implementation if needed
• do not promise to support interface we actually don't need in hot keys

(discussed in the office)

[ShGKme]

Very cool docs!

[ShGKme]

Thanks! Works fine, great examples in docs

[susnux]

/backport to next