add bits hint for fuzzy search

Author: zsqw123

Cargo.lock

@@ -32,6 +32,7 @@ java_asm_server = { path = "asm_server", version = "0.1.2" } # JAVA_ASM_VERSION
 #    not easy for test.
 # so finally I choose `nucleo-matcher` rather than `necleo`.
 nucleo-matcher = "0.3.1"
+bit-set = "0.8.0"
 rand = "0.9.2"
 image = "0.25.6"
 trie-rs = "0.4.2"

Cargo.toml

@@ -12,6 +12,7 @@ readme.workspace = true
 
 [dependencies]
 java_asm = { workspace = true }
+bit-set = { workspace = true }
 
 nucleo-matcher = { workspace = true }
 rand = { workspace = true }
@@ -26,4 +27,4 @@ enum_dispatch = { workspace = true }
 
 tokio = { workspace = true }
 parking_lot = { workspace = true }
-trie-rs = { workspace = true }
+