Copilot ODM documentation update for Result, Signature, Statistics, Submission

[cccs-eric]

Overview

This PR provides updates to the following ODM documentation:

• Result
• Submission
• Signature
• Statistics

Those updates will improve our LLM capability to make sense of the object models and generate answers for questions related to those models.

Details

• Moving nested description attributes to parent (otherwise, the description does not make it to the Markdown)
• In some descriptions, I have added a TODO mark and for all of those, I need a reviewer to provide feedback. Most of the time, it is to validate that the generated description makes sense. If it doesn't, simply write why that is and I will generate a new one using that feedback.