Licensing Policy: Accepting Apache 2 for oss-fuzz related files

[Albert Astals Cid]

We are trying to move most of the oss-fuzz related files to our reops instead 
of being in https://github.com/google/oss-fuzz/

This will allow us to not have to depend on other people to merge changes in 
them which sometimes creates a bit of friction.

The problem is that those files are licenses under Apache 2 which is not 
mentioned in https://community.kde.org/Policies/Licensing_Policy

I would like to propose that we add a point 18 to the policy that says

18. Files involved in the oss-fuzz tooling can be licensed under the Apache 
License 2.0

Comments?

Please see 
https://invent.kde.org/frameworks/karchive/-/merge_requests/125/diffs
for one of the various places we would use it.

Best Regards,
  Albert