Set window title, class, and window type.

[heyitscassio]

Hello, It's usefull to set the window title, class and window type for those that have custom rules in the window manager/compositor that handles notification windows differently. In my case I like to set fading just for notification windows.

This page here basically implements this as intended. If this is wanted I will gladly make a pr. Thanks for making this program.

[RiccardoPP]

Do you know how to catch the herbe window? I'd like to have some shadow around it. Thanks.

[gabrielzschmitz]

Make a patch for it, so we can use something like picom to make herbe transparent, blurred and all of that

[kalankaboom]

I have made such a patch, using what @toniz4 sent.
It's only a two line change...