[ref] gva: move query endpoints in network

rust-libs/modules/gva/dbs-reader/src/endpoints.rs

rust-libs/modules/gva/dbs-reader/src/lib.rs

rust-libs/modules/gva/dbs-reader/src/network.rs

rust-libs/modules/gva/gql/src/queries.rs

rust-libs/modules/gva/gql/src/queries/endpoints.rs

rust-libs/modules/gva/gql/src/queries/network.rs