Merge branch 'opti/kv_typed' into 'dev'

Cargo.lock

rust-libs/tools/kv_typed/Cargo.toml

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

rust-libs/tools/kv_typed/src/backend/leveldb.rs

rust-libs/tools/kv_typed/src/backend/memory.rs

rust-libs/tools/kv_typed/src/backend/memory_singleton.rs

rust-libs/tools/kv_typed/src/backend/sled.rs

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

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

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

rust-libs/tools/kv_typed/src/iter/keys.rs

rust-libs/tools/kv_typed/src/iter/range.rs

rust-libs/tools/kv_typed/src/iter/values.rs

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

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

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

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

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

rust-libs/tools/kv_typed/tests/test_db_schema.rs