[ref] db-tools: prepare sled mig: rename kv_db & make replayable read tx

lib/core/core/src/commands/mod.rs

lib/core/core/src/lib.rs

lib/modules-lib/bc-db-reader/src/indexes/certs.rs

lib/modules-lib/bc-db-reader/src/indexes/identities.rs

lib/modules-lib/bc-db-reader/src/lib.rs

lib/modules-lib/bc-db-reader/src/traits.rs

lib/modules/blockchain/bc-db-writer/src/lib.rs

lib/modules/blockchain/blockchain/src/dubp.rs

lib/modules/blockchain/blockchain/src/fork/fork_algo.rs

lib/modules/blockchain/blockchain/src/requests/received.rs

lib/modules/blockchain/blockchain/src/sync/apply/mod.rs

lib/modules/gva/src/schema.rs

lib/modules/gva/src/schema/inputs/block_interval.rs

lib/modules/gva/src/schema/inputs/paging.rs

lib/modules/gva/src/schema/queries/blocks.rs

lib/tools/dbs-tools/src/kv_db_old.rs

lib/tools/dbs-tools/src/kv_db_old/file.rs

lib/tools/dbs-tools/src/lib.rs