Move integrations code to dedicated project location

[lucamrgs]

As we're testing with The Hive reporting connectors, it would be great to have a dedicated folder in the project to plug-in all integrations code, instead of writing integration modules next to or inside other SOARCA modules.

We could create an "integrations" folder under root level, and agree on the integrations naming and structure, according to the pluggable functionalities that they can provide (e.g. reporting, manual steps)