Adding FlatBuffer, Protobuf and Dataframe parsing support

[felixnext]

This PR introduces Serialization plugins for Flatbuffer, Protobuf and Dataframe.

It also splits the library into sub-packages that will have to be installed.

[felixnext]

This will bump the release to version 2.0.0, as some of the changes are breaking backward compatibility (such as splitting the extras of the library).

Overall main new features are:

• Support for Protobuf, Flatbuffers & DataFrame serialization
• Some Bug Fixes
• Integrated proper testing for Python 3.11 and 3.7 (to ensure compatibility)
• Updated docs accordingly
• Changed Cases of Enums in the args module (to make them consistent since they are used across lib) - this is a backward-breaking change!
• Splitted dependencies of the library into extras (to ensure lightweight packaging)
• Updated example Azure Functions
• Removed deprecated elements (e.g. Insights function, use insights instead - lower case)

[felixnext]

PR is good to join, but need to investigate Protobuf deployment to Azure Functions & update docs