Convenient object-like heirarchical access for state dictionaries

[XDynames]

Access to state via a logical object hierarchy: ego_state.wheels.front_left.tyre_temperature

[XDynames]

With the way things are evolving in the Shared Memory exploration this might become more sensible.
Currently we hold of interpreting the raw bytes from the game until they arrive in the capture/inference process.
So I am tossing up where it is better to just write the raw bytes straight to disk and implement a lazy interpreting object store that reads from the byte array only when you access a property
Not 100% sure if it will work yet but just a thought, storing everything in Numpy was nice until we have dtype compatibility issues.