[feat] kv_typed: create type U32BE

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

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

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

rust-libs/duniter-dbs-write-ops/src/bc/uds.rs

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

rust-libs/duniter-dbs/src/bc_v2.rs

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

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

rust-libs/tools/kv_typed/src/as_bytes.rs

rust-libs/tools/kv_typed/src/explorer.rs

rust-libs/tools/kv_typed/src/from_bytes.rs

rust-libs/tools/kv_typed/src/key.rs

rust-libs/tools/kv_typed/src/lib.rs