Device component:

- Migrated to use new generic gRPC servicer
- Migrated to use new generic Rest servicer
- Migrated to use new settings framework
- Migrated tests to use new generic servicers and mock's
- Solved bug with endpoint monitors' population (dupplicated sample types due to wrong key generation)
- Use Emulated driver when both driver and device type are not specified
- Separated unitary tests and execution scripts per device driver
- Extracted common unitary test functionalities into separate code files
- Minor code styling/formatting