Support syncing existing local folders

Author: Mike-Solar

crates/cloudreve-sync/Cargo.toml

@@ -18,6 +18,8 @@ tracing-appender = "0.2"
 tower-http = { version = "0.5", features = ["trace", "cors"] }
 futures = "0.3"
 reqwest = { version = "0.12", features = ["json", "stream", "multipart"] }
+md-5 = "0.10"
+sha1 = "0.10"
 sha2 = "0.10"
 image = "0.24"
 url = "2.5"