GEP-696: GEP template

• Issue: #696
• Status: Provisional|Implementable|Experimental|Standard|Deferred|Rejected|Withdrawn|Replaced

(See status definitions here.)

TLDR

(1-2 sentence summary of the proposal)

Goals

(Primary goals of this proposal.)

Non-Goals

(What is out of scope for this proposal.)

Introduction

(Can link to external doc -- but we should bias towards copying the content into the GEP as online documents are easier to lose -- e.g. owner messes up the permissions, accidental deletion)

API

(... details, can point to PR with changes)

Conformance Details

(This section describes the names to be used for the feature or features in conformance tests and profiles.

These should be CamelCase names that specify the feature as precisely as possible, and are particularly important for Extended features, since they may be surfaced to users.)

Alternatives

(List other design alternatives and why we did not go in that direction)

References

(Add any additional document links. Again, we should try to avoid too much content not in version control to avoid broken links)