Feature request - delete menu item, for deleting a message

[fred-bowker]

Delete message is core functionality for a messaging app, edit message exists, so delete message should exist. In the examples app CommentsExampleView.swift treats delete as a custom option, however there should be default delete functionality.

New functionality introduced

The following functionality is based on the UI for how Telegram and WhatsApp handle message deletion.

• Delete option added to the message menu for both my messages and their messages.
• When selected brings up a new modal view.
• The modal view for their message shows "delete for me"
• The modal view for my messages shows "delete for me", "delete for everyone"
• Tap on background dismisses the modal

@f3dm76 I'll work on this item and should have a pull request up soon

[f3dm76]

Hey @fred-bowker, please check out version 3.2.2, I added delete as we discussed earlier: a closure for default menu, and a case for custom menu enums, have a wonderful day!