Support for copying information from notifications

### Description

I can get notified about various items by the development environment.

### Use case/motivation

I would like to be able to copy information from selected notifications.
Details from warnings and error messages should be copyable also within the window “Notifications”.

### Related issues

_No response_

### Are you willing to submit a pull request?

No

### Code of Conduct

Yes

The issue names no files, tests, or entry points. Start by locating the NetBeans Notifications window implementation and reviewing how warning and error details are rendered; done means information from selected notifications, including those details, can be copied from the window.

Written by the indexing model from the issue text.