Preserve GitHub review and discussion in an external medium

[makubacki]

This issue tracks preservation of GitHub conversation outside GitHub. This includes PR code review comments and GitHub discussions.

The concern is that:

1. GitHub emails do not have sufficient context.
2. GitHub PRs "lose" information.
3. If Tianocore moves away from GitHub, information must not be lost in the transition.

Configuration tasks

Beta Give feedback

1. Identify what information is lost in a GitHub PR #50
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2. Define exactly what information needs to be preserved (that is not already in GitHub emails) #51
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3. Define a GitHub transition process (as a future mitigation) #52
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4. Define the work needed to close this issue #53
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