Figure out GitHub and PROW release permissions for okd-project org

When performing an OKD release using skhoury@redhat.com's account via a Personal Access Token, we received an HTTP 403 using the GitHub CLI tool. This poses two problems:

1. We don't know what permissions are actually required.
2. It binds the permissions and credentials to an individual or gives a group of individuals a lot of unnecessarily elevated permissions. Thus, it may better to have them bound to a robot account.

Done When:

• We understand what permissions are required to create a GitHub release in both the okd-project/okd and okd-project/okd-scos repositories.
• Either a robot GitHub account is created or another authentication mechanism (such as an OAuth application) is used.
• The credentials needed to do that are created in both the OperateFirst Vault instance and the okd-team namespace on the Smaug cluster.