[ref] gva: move gva db definition in new crate duniter-gva-db

Cargo.lock

rust-bins/duniter-dbex/Cargo.toml

rust-bins/duniter-dbex/src/main.rs

rust-libs/duniter-dbs/Cargo.toml

rust-libs/duniter-dbs/src/databases.rs

rust-libs/duniter-dbs/src/keys.rs

rust-libs/duniter-dbs/src/keys/utxo_id.rs

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

rust-libs/duniter-dbs/src/values.rs

rust-libs/duniter-dbs/src/values/tx_db.rs

rust-libs/modules/gva/Cargo.toml

rust-libs/modules/gva/db/Cargo.toml

rust-libs/modules/gva/db/src/keys.rs

rust-libs/modules/gva/db/src/keys/gva_utxo_id.rs

rust-libs/modules/gva/db/src/keys/wallet_hash_with_bn.rs

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

rust-libs/modules/gva/db/src/values.rs

rust-libs/modules/gva/db/src/values/gva_idty_db.rs

rust-libs/modules/gva/db/src/values/gva_tx.rs

rust-libs/modules/gva/db/src/values/wallet_script_array.rs