Interop Naming

[tynes]

Opening this issue for discussion

There is often confusion around the term "message" as it is in practice it is a log. The original name was chosen to be generic over the data structure. We should consider renaming things so that its more clear exactly what data structures are used.

For example we could rename the validateMessage function to validateLog and rename executeMessage to executeLog.

We could also rename the more generic terms "initiating message" and "executing message".

This is a heavily breaking change and should be done sooner rather than later