feat: 返回原文件名，给用户自行处理

Author: share121

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "fast-down"
 description = "Fast Down Multiplex and Demultiplexes library"
-version = "3.0.0"
+version = "3.1.0"
 readme = "README.md"
 documentation = "https://docs.rs/fast-down"
 keywords = ["download", "fast", "parallel", "concurrency"]
@@ -17,33 +17,16 @@ fast-pull.workspace = true
 futures.workspace = true
 url.workspace = true
 content_disposition = { version = "0.4.0", optional = true }
-sanitize-filename = { version = "0.6.0", optional = true }
 urlencoding = { version = "2.1.3", optional = true }
 bytes.workspace = true
 reqwest = { version = "0.12.22", default-features = false, features = [
   "stream",
 ], optional = true }
-curl = { git = "https://github.com/fast-down/curl-rust", version = "0.5.0", optional = true }
 kanal.workspace = true
-slab = "0.4.11"
-oneshot = "0.1.11"
-anyhow = "1.0.99"
-atomic-wait = { version = "1.1.0", optional = true }
-
-[[bin]]
-name = "libcurl-main"
-required-features = ["curl"]
-path = "curl.rs"
 
 [features]
 default = ["reqwest"]
-reqwest = [
-  "dep:reqwest",
-  "dep:content_disposition",
-  "dep:sanitize-filename",
-  "dep:urlencoding",
-]
-curl = ["dep:curl", "dep:atomic-wait"]
+reqwest = ["dep:reqwest", "dep:content_disposition", "dep:urlencoding"]
 
 [dev-dependencies]
 tokio = { version = "1.47.1", features = [