[FEATURE]: clear clipboard after password was copied

[nobvaillant]

⚠️ This issue respects the following points: ⚠️

• [X] This is a feature request for one feature, not a question, discussion or multiple features.
• [X] This is not a feature request for the browser extension or another client.
• [X] This feature is not already requested on Github (I've searched it).
• [X] This feature does not already exist (I checked the wiki).

Current Status

If I copy a password, the password is available in the clipboard until I copy another resource. Other applications would be able to gather information of the clipboard.

Feature Description

After copying the password, the clipboard would be cleared after a few seconds, so that no other application would be able to access the information in the clipboard.

Additional Context

This mitigates just the risk, but it is really helpful in the case, if you forgot it, that there is still a password in your clipboard and you paste it anywhere by accident. But I also don't know if this is technically possible by the browser edition?

[marius-wieschollek]

Browsers don't allow writing to the clipboard outside of a click action.