Enhancement Proposals and Architecture Decisions

Please see 0000-dep-process for full explanation and details.

1. Start with either the NNNN-complete-template.md and remove unneeded sections or the NNNN-limited-template.md and then add selectively from the complete template based on need.

2. Identify a code-owner or maintainer of the DEP repository to shepard the process.

3. Create a draft PR and iterate with co-authors, Sponser

4. When ready for review, mark as ready and work with Sponser to set a review date.