Create Infrastructure (Abstractions, json configuration) for creating open source message filters/processors

[Psychlist1972]

Abstraction needs to be able to manipulate the incoming message stream to add/remove messages, transform messages, etc. This may also be the best place to parse Stream messages, and so these may also need access to PnP calls in the service.

[Psychlist1972]

The outstanding items on this is json configuration and ability to add these at runtime. Currently, the objects are hard-referenced.