feat: persistent btree key-value implementation

Author: peeeuzin

Cargo.toml

@@ -25,6 +25,7 @@ serde = { version = "1.0", features = ["derive"] }
 bloomfilter = "1.0"
 fs2 = "0.4.3"
 bincode = "1.3.3"
+rand = "0.8.5"
 
 [build-dependencies]
 hooky-rs = "1.0.0"