[ref] bc-db: migrate certs & mbs to lmdb

lib/dubp/common-doc/src/blockstamp.rs

lib/dubp/indexes/src/sindex.rs

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

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

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

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

...modules/blockchain/bc-db-writer/src/indexes/identities.rs

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

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

lib/modules/blockchain/blockchain/src/dbex.rs

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

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

lib/modules/blockchain/blockchain/src/dunp/receiver.rs

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

...odules/blockchain/blockchain/src/fork/stackable_blocks.rs

...les/blockchain/blockchain/src/sync/apply/blocks_worker.rs

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

...odules/blockchain/blockchain/src/sync/apply/txs_worker.rs

...odules/blockchain/blockchain/src/sync/apply/wot_worker.rs

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