Implement sharing API

[hyuri]

What is the problem or limitation you are having?

At least iOS, Android and macOS seem to offer an API to share a document with another app. As seen in:

iOS	Android	macOS

Toga doesn't currently offer that.

I'm writing an app that produces a file, and it would be handy if the user could simply share this file with other apps, directly from my app.

Describe the solution you'd like

Implement sharing API, that allows us to present the user with the option to share a document/file with another app.

Describe alternatives you've considered

None

Additional context

No response

[freakboy3742]

I can see how this could be possible and/or useful. What's the "common subset" of sharing features on iOS, macOS and Android? What (if any) permission controls are needed? What's the proposed API design? Are there any prospects of an analogous API for Windows, GTK, Console, Web...?

[hyuri]

I can see how this could be possible and/or useful. What's the "common subset" of sharing features on iOS, macOS and Android? What (if any) permission controls are needed? What's the proposed API design? Are there any prospects of an analogous API for Windows, GTK, Console, Web...?

Honestly, I have no idea. Those questions fall outside of my domain. Just wanted to propose the idea. Hoping someone more knowledgeable can answer those.