[ref] rust-server: reserve write access to bc db to core only

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

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-server/src/lib.rs

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

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

rust-libs/modules/gva/src/mutations.rs

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

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

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