Create kubernetes.core repository

[tima]

In preparing for #221, a new kubernetes.core repo needs to be created. Since both of these will need to exist for a time simultaneously this new repo will not be a clone or fork of this repo. For the moment, it will be a new repo and should include a README explaining the name change and migration. This will also fix the 404 error on the kubernetes.core collection Galaxy page repo link.

https://galaxy.ansible.com/kubernetes/core

[gundalow]

Created https://github.com/ansible-collections/kubernetes.core with the same owners as community.kubernetes

[gundalow]

Please accept the invite to the repo via https://github.com/ansible-collections/kubernetes.core/invitations

[tima]

Thanks @gundalow.