feat: ietf-slice operations draft added to NBI to support the CAMARA PoC

...rest_server/nbi_plugins/ietf_network_slice/NSS_Service.py

..._plugins/ietf_network_slice/NSS_Service_Match_Criteria.py

...est_server/nbi_plugins/ietf_network_slice/NSS_Services.py

...gins/ietf_network_slice/NSS_Services_Connection_Groups.py

...erver/nbi_plugins/ietf_network_slice/NSS_Services_SDPs.py

...st_server/nbi_plugins/ietf_network_slice/YangValidator.py

...ce/rest_server/nbi_plugins/ietf_network_slice/__init__.py

...rver/nbi_plugins/ietf_network_slice/ietf_slice_handler.py

...ns/ietf_network_slice/yang/ietf-ac-common@2023-11-13.yang

...ugins/ietf_network_slice/yang/ietf-ac-svc@2024-08-06.yang

...s/ietf_network_slice/yang/ietf-ethertypes@2019-03-04.yang

...ietf_network_slice/yang/ietf-geo-location@2022-02-11.yang

...s/ietf_network_slice/yang/ietf-inet-types@2024-10-21.yang

...ns/ietf_network_slice/yang/ietf-key-chain@2017-06-15.yang

.../ietf_network_slice/yang/ietf-netconf-acm@2018-02-14.yang

...ns/ietf_network_slice/yang/ietf-network-slice-service.txt

...ork_slice/yang/ietf-network-slice-service@2024-08-28.yang

...etf_network_slice/yang/ietf-network-slice@2022-03-04.yang

..._network_slice/yang/ietf-network-topology@2018-02-26.yang

...gins/ietf_network_slice/yang/ietf-network@2018-02-26.yang