Add more actions based on field type

[MaKleSoft]

In addition to copying to clipboard, other actions may make sense for some field types. E.g.:

• email -> send
• url -> open
• phone number -> call
• password -> generate random (already implemented)

If a field has more than one possible action, we should define a default action that is performed e.g. when tapping on the field in the list view. Perhaps this action can be made customizable as well.