Proposal to update the CODEOWNERS file and add MAINTAINERS file

[toddysm]

What is the areas you would like to add the new feature to?

TUF

Is your feature request related to a problem?

The current content of the CODEOWERS file does not list the actual owners and points to a Team on GitHub. This does not provide enough visibility who the owners are.

What solution do you propose?

The proposal is to create a seed list of maintainers for each repository (aka considered sub-project) under the Notary Project organization and update the CODEOWNERS and MAINTAINERS files for each repository with that list. As per the current governance document:

Potential new maintainers should be ongoing active participants in the project

Hence, I propose that repo maintainers are proposed from the list of currently active participants in the Notary community by selecting them from the list of code contributors for the last 3-6 months or meeting participants as per the meeting notes.

I also propose to nominate individual maintainers in separate issues and put for a vote by the active participants' community.

What alternatives have you considered?

None

Any additional context?

No response