Feature request: Enable pasting images from clipboard on iOS

To be able to share a screenshot or a random image from a website or from another app on iOS, now the user has to use the share sheet (or save the image first to Photos and then add it to the message from the library as an attachment).

It would be awesome if someone could implement the clipboard functionality so the user could just simply paste an image to the text field.

Thanks! 🙏

No files or tests are named. Start by locating the iOS message composer and the existing share-sheet or Photos attachment flow; done means an image copied from another iOS app can be pasted into the text field and sent as an attachment.

Written by the indexing model from the issue text.