feat(tcp_connection): add MessagePack serialization support

- Add rmp-serde dependency for MessagePack serialization
- Implement write_msgpack and read_msgpack methods for basic MessagePack support
- Add write_large_msgpack and read_large_msgpack methods for chunked transmission
- Add error conversions for rmp-serde errors
- Add comprehensive tests for MessagePack functionality
- Fix code formatting and improve readability
- Make stream field pub(crate) for better access control

All tests pass successfully, ensuring backward compatibility.

1 files changed, 2 insertions, 0 deletions

diff --git a/crates/vcs/src/lib.rs b/crates/vcs/src/lib.rs
index 1b41391..9a84b4d 100644
--- a/crates/vcs/src/lib.rs
+++ b/crates/vcs/src/lib.rs
@@ -3,3 +3,5 @@ pub mod current;
 
 #[allow(dead_code)]
 pub mod data;
+
+pub mod service;