[CX_HARDENING] - Design the Twins Implementation

[jparr721]

What is this task and why do we need to work on it?

Twins Paper, Blog Post

We need a design document for the Twins Byzantine testing implementation, and to decide if we need to create a new test framework (unlikely), or upgrade the existing one to support this behavior.

What work will need to be done to complete this task?

No response

Are there any other details to include?

No response

What are the acceptance criteria to close this issue?

Design document is added in the team folder and approved by the team.

Branch work will be merged to (if not the default branch)

No response