RequestReply: Create API types

[Cali0707]

Problem
To add the RequestReply resource, we need to add the API type. See the design doc for more info on the types.

Persona:
Which persona is this feature for?

Exit Criteria
The CRD and api types exist

Time Estimate (optional):
How many developer-days do you think this may take to resolve? 1-2

Additional context (optional)
Add any other context about the feature request here.

Part of #7912

[Cali0707]

/triage accepted