socks5 support

Signed-off-by: fufesou <shuanglongchen@yeah.net>

Cargo.lock

@@ -1553,6 +1553,7 @@ name = "hbb_common"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "async-trait",
  "bytes",
  "confy",
  "directories-next",
@@ -1560,10 +1561,13 @@ dependencies = [
  "env_logger 0.9.0",
  "filetime",
  "futures",
+ "futures-core",
+ "futures-sink",
  "futures-util",
  "lazy_static",
  "log",
  "mac_address",
+ "pin-project",
  "protobuf",
  "protobuf-codegen-pure",
  "quinn",
@@ -1574,6 +1578,7 @@ dependencies = [
  "socket2 0.3.19",
  "sodiumoxide",
  "tokio",
+ "tokio-socks",
  "tokio-util",
  "toml",
  "winapi 0.3.9",
@@ -2455,6 +2460,26 @@ dependencies = [
  "siphasher",
 ]
 
+[[package]]
+name = "pin-project"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.8"
@@ -3643,6 +3668,22 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tokio-socks"
+version = "0.5.1"
+source = "git+https://github.com/fufesou/tokio-socks#121a780c7e6a31c3aac70e7234f5c62eecaf0629"
+dependencies = [
+ "bytes",
+ "either",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "pin-project",
+ "thiserror",
+ "tokio",
+ "tokio-util",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.6.9"