Add CD Drive eject command

[Bloomca]

Description

Can be helpful to abstract it in cross-platform way, e.g. for rippers.

[Bloomca]

Can be also added to load. I need to double check whether we return empty CD drives and CD drives with an open tray (which are also empty naturally), might need to expand it a bit. Maybe in that case we'll need to add a command to check the drive: currently we have open command for that, maybe not the best ergonomically.