Common:
- added helper scripts

FrontEnd:
- corrected import paths
- added missing parameters in test
- refined creation of backend request

- added test-deploy.sh script
- partial arrangement of GitLab CI/CD
- added configuration constants
- arranged Dockerfile
- corrected imports of proto Python files
- implemented composition of backend request

- Moved imports from *.proto folder to common.proto folder
- Removed pathcomp's genproto.sh script
- Minor code and linting fixing
- Arranged requirements to accelerate Docker image creation
- Updated Dockerfile
- Arranged GitLab CI/CD pipeline

- Added definition of algorithm in proto file
- Minor code comments and TODOs added

- extended proto file to support retrieval of both services and connections, e.g., services requested + sub-services, and the connections and sub-connections supporting the services and sub-services.
- minor bug fixings in MockServicerImpl_Context and implementation of support for Slices
- implemented and pre-tested unitary tests for PathComp
- implemented in PathComp service the logic to retrieve context data, and the skeleton to retrieve the replies to compute requests.

- initial skeleton (not functional)

Finalizing the code. Making consistent parameter naming on the constructor of the clients. Improving tests to provide 100% coverage.