[ref] gva: rework pagination cursors

rust-libs/duniter-dbs-read-ops/src/find_inputs.rs

rust-libs/duniter-dbs-read-ops/src/lib.rs

rust-libs/duniter-dbs-read-ops/src/pagination.rs

rust-libs/duniter-dbs-read-ops/src/uds_of_pubkey.rs

rust-libs/duniter-dbs-read-ops/src/utxos.rs

rust-libs/modules/duniter-gva/src/lib.rs

rust-libs/modules/duniter-gva/src/pagination.rs

rust-libs/modules/duniter-gva/src/queries/uds.rs

rust-libs/modules/duniter-gva/src/queries/utxos.rs