- Correct retrieval of context_uuid in methods RemoveSlice and RemoveService

- `common` > `tests` > `InMemoryObjectDatabase.py`: enhance log error reporting
- `common` > `tools` > `descriptor` > `Tools.py`: correct formatting of non-string resource_values in custom config rules in method `format_custom_config_rules()`
- `common` > `tools` > `service` > `GenericRestServer.py`: correct format of reported listen URL

- Added merge of device_ids and link_ids in Topology

- Extended MockServicerImpl_Context to add/remove topologies, services and slices to/from contexts

- Implemented skeleton of plugin
- Added test scenario
- Added new requirements
- Extended MockContext to properly link/unlink topologies, services and slices to contexts

- InMemoryObjectDatabase: Corrected default log level and initialization of internal database
- InMemoryTimeSeriesDatabase: Corrected default log level
- MockServicerImpl_Context: Migrated to use InMemoryObjectDatabase and corrected default log level
- MockServicerImpl_Monitoring: Corrected default log level and log messages; fixed method signatures and imports

- Corrected filters in InMemoryTimeSeriesDatabase
- Extended MockServicerImpl_Context to track devices and links in topologies
- Corrected method QueryKpiData in MockServicerImpl_Monitoring

- Implemented InMemoryObjectDatabase
- Implemented InMemoryTimeSeriesDatabase
- Extended Mock Monitoring with KPIDescriptor management and retrieval of timeseries data from pandas DataFrame

- Updated MockServicerImpl_Monitoring to make field queue_samples as optional

- Correct attribute name component to components in Device message

- Removed unused TOPICS variable

- added support for dictionary and file-based loading of descriptors
- added getter methods
- added validation and unload methods
- integrated helper methods
- updated documentation

- Added/Updated headers
- Added script to update copyright headers

- corrected gRPC format of Events in MockMessageBroker

- added missing log messages in MockContext

- updated generic descriptor loader tool
- updated scenario loader for automated tests

- new generic descriptor loader tool
- new scenario loader for automated tests

- corrected SetContext
- corrected SetSlice/RemoveSlice
- implemented GetSliceEvents
- corrected RemoveService

- updated manifest file with gateway container port
- corrected behaviour of GetFromDlt method in MockDltGateway
- minor formatting in MockDltGateway
- implemented first version of DltConnector's Event Dispatcher (to be tested)
- moved own-domain-uuid finder to separate class in DltConnector
- implemented method to identify empty/not-found records

- Improved error logging

MockBlockchain:
- Implemented mock-blockchain module to facilitate testing and debugging of DLT connector & workflows
- Added manifests, Dockerfile, etc.

DLT Connector:
- corrected requirements.in
- updated Dockerfile
- WIP: implementation of test_unitary.py

DLT Gateway:
- Improved/extended Dockerfile
- Moved Dockerfile to correct folder
- Corrected import path for proto files

Common:
- added slice to EventTools

OFC'22 tests:
- corrected OFC'22 delete service test to identify appropriate service to be deleted
- removed usage of events for testing

Compute:
- remove diversity constraint when not populated

Device:
- removed unused field in database and code polishing

Service:
- migrated L3NMEmulatedServiceHandler to the new API
- polishing of code

- Implemented MockServicerImpl_DltGateway
- Updated Objects for unitary tests

- Arranged .gitignore & .gitkeep files in common proto folder
- Created specific run_tests_locally script for Context component
- Moved imports from *.proto folder to common.proto folder
- Adapted common.tools.object_factory to new proto definitions for ConfigRule and Constraint
- Extended common.tools.type_checkers to new proto definitions for ConfigRule and Constraint
- Removed context's genproto.sh script
- Adapted Events generated to new timestamp data type
- Minor code and linting fixing

- 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.

- defined unified constants for all micro-services
- defined common settings getter methods
- defined generic gRPC servicer
- defined generic Rest servicer
- defined common MockServicer for Monitoring component
- removed old common/tests MockService class; to be replaced by new generic gRPC servicer
- minor code formatting/styling

- Added Mock Slice service
- Corrected Compute unit tests