Add utilities to support camera and DPDK developments

[timcnicholls]

This PR adds support to odin-data to facilitate external camera-based and DPDK-accelerated FP plugin development. This includes:

• installation of CMake finders into the install tree to avoid duplication across repositories
• Addition of a ParamContainer class to the common library, to allow simple parameter handling for e.g. camera configuration
• Addition of non-breaking convenience methods to IpcMessage to allow serialisation/deserialisation of ParmContainer parameters to/from IPC messages

[timcnicholls]

Thanks for the feedback: here's an example for some better context.

The intention was to implement a simple flat container for parameters as member variables, allowing (de)/serialisation to/from JSON, i.e. parameter payloads in IPC messages. It's a bit like a flat parameter tree but without external or explicit setters/getters, hence the comments above. The container fields can be used locally to e.g. store configuration parameters, updated from a IPC config message and retrieved when the config is requested. Does that make more sense?

[GDYendell]

Thanks for the feedback: here's an example for some better context.

Ah OK yes this looks neat.