[tests] mock db read ops & test some gva queries

Cargo.lock

Cargo.toml

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

rust-libs/duniter-dbs-write-ops/Cargo.toml

rust-libs/duniter-dbs-write-ops/src/apply_block.rs

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

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

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

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

rust-libs/duniter-server/Cargo.toml

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

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

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

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

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

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

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

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

rust-libs/tests/duniter-integration-tests/Cargo.toml

rust-libs/tests/duniter-integration-tests/src/lib.rs