Add support for all creative commons licenses

[AMDmi3]

Summary

A lot of ports contain data under one of creative commons licenses, and current way of documenting this fact in port is rather clumsy, while we actually need to document this as e.g. CC-by-NC* variants prohibit commercial distribution. So let's add these licenses to the framework.

I'd prefer to convert individual ports to these licenses in separate commits, as most of them require additional fixes (such as incorrect license variant specified).

There are around 30 ports which may be simplified because of this change. More ports will benefit when they document their data license.

Note1: license names and abbreviations are taken from https://spdx.org/licenses/, e.g. are standard
Note2: these actually do not belong in any groups. https://spdx.org/licenses/ (not listead as OSI approved), https://www.gnu.org/licenses/license-list.html (not listead as GPL compatible), http://copyfree.org/standard/licenses (not listed as copyfree)

Test Plan

games/catesc port converted to new licenses

[AMDmi3]

Maybe it's worth to define these in a loop by version, e.g.:

.for ver in 1.0 2.0 2.5 3.0 4.0
_LICENSE_NAME_CC-BY-${ver}=        Creative Commons Attribution ${ver}
_LICENSE_GROUPS_CC-BY-${ver}=        # empty

_LICENSE_NAME_CC-BY-SA-${ver}=        Creative Commons Attribution Share Alike ${ver}
_LICENSE_GROUPS_CC-BY-SA-${ver}=        # empty
...

?