feature: audio-visual indicator

[bennypowers]

Is your feature request related to a problem? Please describe. The user is likely to save entries containing sensitive information to the clipboard history without realising it.

Describe the solution you'd like Play a sound or show a notification when copying, so that the user is made aware that an entry has been saved in the history

Describe alternatives you've considered an audio notification is ideal for users who are able to use audio, but if they are not, a visual notification should be provided as well, and ideally the preference between either or both should be made available

Additional context paste.app for macos has a similar feature, as does clipboard indicator shell extension

[ecnivo]

Alternatively, other clipboard managers allow you to blacklist some programs -- for example, I've set CopyQ to ignore items from my password manager: https://copyq.readthedocs.io/en/latest/faq.html#how-to-omit-storing-text-copied-from-specific-windows-like-a-password-manager