Add PATCH method to update the newly created service

...-app-enablement/server/capif-mgmt/api_mec_service_mgmt.go

go-apps/meep-app-enablement/server/capif-mgmt/convert.go

...rver/capif-mgmt/model_mec_service_info_capif_ext_patch.go

.../server/capif-mgmt/model_service_api_description_patch.go

...pps/meep-app-enablement/server/capif-mgmt/service-mgmt.go

go-apps/meep-app-enablement/server/routers.go