feat: get all clipboard data

[jcesarmobile]

Feature Request

Description

At the moment the clipboard plugin only returns one element on read() method, but the clipboard could contain more elements as seen on https://github.com/ionic-team/capacitor/issues/6736, not only of the same type, they could also have different types (urls, images, text)

Platform(s)

ios
android
web

Preferred Solution

Add a new method readAll() (or similar name) that returns an array with all the elements in the clipboard

Alternatives

Modify the read() method to return an array of ReadResult instead of a single ReadResult, but that would be breaking, so should wait for next major release.

Additional Context