Define serialization/deserialization functions for messages in the message layer #280
Description
In the message layer, define a FromNet_1_0 function and a ToNet_1_0 method on message
- we should maintain two maps of [peer + legacy requestID] -> UUID + UUID -> [peer + legacy requestID]
FromNet_1_0 algorithm:
- for each legacy ID in the message, check the peer+legacy -> UUID for an existing value. If not, generate a new UUID and write entries in both maps. Use existing UUID if present
ToNet_1_0 algorithm:
- for each UUID in the message, check the UUID -> peer+legacy ID map for an existing value. If not, generate the new UUID and write entries in both maps. Use existing Peer + legacy request ID if present.