[feat] gva: add query firstUtxosOfScripts

Cargo.lock

rust-libs/modules/gva/dbs-reader/Cargo.toml

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

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

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

rust-libs/modules/gva/gql/src/entities/utxos_gva.rs

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

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

...ibs/modules/gva/gql/src/queries/first_utxos_of_scripts.rs

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