Add an option to set chat background transparency

[Linerly]

The Problem

I'd like to have an option to set the chat background transparency, just like NeoChat

The Solution

Add an option to set the chat background transparency in the settings, and make the chat background transparent with the transparency value that the user wants

Alternatives

No response

Additional context

No response

Happens in the latest version

• [X] Yes, this feature is still missing.

[LorenDB]

I'm not sure if it is possible to achieve that kind of blur without using KDE Frameworks. I've tried doing it for my own apps before and not been able to get it working.

[deepbluev7]

(You can easily set a transparency, the hard part is having some background blur, because that is not standardized.)

[LorenDB]

Relevant QTBUG: https://bugreports.qt.io/browse/QTBUG-85310