Support for integrations with smart picker

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Is your feature request related to a problem? Please describe.

I've updated my instance to NC26. Considering I set up some integrations that work with smart picker, especially in Notes, I thought they'd work with Notes for Android as well. Alas, only "Any link" shows up when using the / command in rich text mode.

Describe the solution you'd like

Provide all the options the smart picker allows for in browser apps.

Describe alternatives you've considered

I've considered using Firefox on Android with browser apps, but that really kills the idea of a native app.
I've also considered this is a bug, or configuration error, seeing how smart picker is barely documented in official Nextcloud docs anyway, as far as I can tell.

Additional context

Start with the rich text editor's / command and compare its available options with the smart picker integrations supported by the browser apps. Confirm how the Notes Android app currently handles the command, then implement support for all options available in the browser apps and verify that they appear when typing /.