Add documentation for GÉANT IP service related code

build-docs.sh

docs/source/glossary.rst

docs/source/module/products/product_blocks/bgp_session.rst

docs/source/module/products/product_blocks/geant_ip.rst

docs/source/module/products/product_blocks/index.rst

...e/module/products/product_blocks/service_binding_port.rst

docs/source/module/products/product_types/geant_ip.rst

docs/source/module/products/product_types/index.rst

docs/source/module/utils/index.rst

docs/source/module/utils/types/base_site.rst

docs/source/module/utils/types/coordinates.rst

docs/source/module/utils/types/country_code.rst

docs/source/module/utils/types/index.rst

docs/source/module/utils/types/interfaces.rst

docs/source/module/utils/types/ip_address.rst

docs/source/module/utils/types/netbox_router.rst

docs/source/module/utils/types/site_name.rst

docs/source/module/utils/types/tt_number.rst

docs/source/module/utils/types/unique_field.rst

docs/source/module/workflows/edge_port/index.rst