Restructure the code

[lbedogni]

Status: Partially Complete. Dependency profiles DONE (SCIOT-000) but ABCs needed (see #24).

[lbedogni]

This issue has been split into smaller tasks for better management:

Sub-tasks Tracking

• [Sub-issue for #22] Define Abstract Base Classes and Interfaces #24 Define Abstract Base Classes and Interfaces
• [Sub-issue for #22] Refactor Raspberry Pi Client to use Base Interfaces #25 Refactor Raspberry Pi Client to use Base Interfaces
• [Sub-issue for #22] Consolidate Configuration Management #26 Consolidate Configuration Management