- Pre-merge cleanup

- Added device type IP SDN Controller
- Added logic to split controllers and devices
- Controllers are onboarded first, then devices

- `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

- Enabled explicit addition of devices and links to topologies

- Removed update context/topology as it is not needed

- Added dummy unload mode

- corrected parsing of slice descriptors

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

- Implemented parallel descriptor loading, especially for device onboarding

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

- removed incorrect instruction

- solved issue parsing slice config rules

- fixed show_logs_monitoring script
- Context Queries: added get_service, get_slice, get_topology methods
- Context Queries: corrected bug with get inter topology
- Moved old Build/Load Descriptor scripts to common
- Fixed retrieval of objects loaded from descriptors
- Deactivated close of clients in descriptor loader
- Moved MockOSM library to common tests/tools folder

Compute component:
- updated to use new context query methods
- updated to use new MockOSM location

OFC'22 tests:
- updated MockOSM paths
- updated fixtures
- added loggers
- corrected WIM service definitions
- improved verification of KPIs created and values returned
- optimized removal of entities
- optimized service discovery in delete test
- added on-line logging to tests

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

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