Add `drive-optical` icon

Summary:
It's just a symlink to `media-optical` which looks great and fits the bill.

BUG: 396432
FIXED-IN 5.49

Reviewers: broulik, andreask, #breeze, #vdg

Subscribers: kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D14123