Change RemoteStore to handle media types and verify segments

RemoteStore today relies on byte[]s matching without any verification. This means if you must have your cache that has the store and the remote cache sharing the same binary key and value storage.

We can enhance this to check the media types which buys us a few things

1. We don't have to marshall values that already match the same key and value types (excluding object storage)
2. Segmentation can only be supported if the key media types match exactly (including object storage) and also the number of segments must match