- Removed unused TOPICS variable

- Moved Events to database sub-module
- Improved API for notification publication and consumption
- Moved construction of gRPC reply objects to database sub-module
- Moved generation of context change notifications to database sub-modules
- Minor cosmetic improvements

Scenario.md:
- Recormatted and extended description of NFV-SDN'22 network topology and scenario.

deploy_all.sh:
- Activated deployment of mock blockchain by default
- Corrected mock blockchain deploy command
- Improved script comments

dump_logs.sh:
- Added missing webui containers
- Reorganized log folders to align with rest of experiments

reset.sh:
- Added commands for domains 2, 3, and 4
- Added script comments

show_deploy.sh:
- Added commands for domains 2, 3, and 4

deploy_specs_dom*.sh:
- Updated and aligned scripts with my_deploy.sh

- Corrected default operationla status of emulated devices

- Corrected logic to auto-activate monitoring of enabled endpoints in enabled devices

- Added wait conditions to ensure Context connects to NATS.

- Pre-merge code cleanup

- Corrected dependencies
- Pre-merge code cleanup

- Replace custom Empty message by StatusMessage
- Pre-merge code cleanup