Ship color schemes with Oxygen

Summary: Because Oxygen color schemes are being removed in D21701, we now need to ship them with Oxygen.

Test Plan:
delete these color schemes if they are present in `/usr/share/color-schemes/`

compile

Reviewers: #plasma, #vdg, ngraham

Reviewed By: #vdg, ngraham

Subscribers: plasma-devel

Tags: #plasma

Maniphest Tasks: T10497

Differential Revision: https://phabricator.kde.org/D21702