feat: change network::protocol::codec::IProtoType representation to C

Author: Кирилл Безуглый

CHANGELOG.md

@@ -15,6 +15,7 @@
 - Added optional argument timeout to `network::client::Client::connect_with_config`
 
 ### Changed
+- `network::protocol::codec::IProtoType` uses C language representation
 
 ### Fixed
 - `tlua::{Push, PushInto, LuaRead}` now work for HashSet & HashMap with custom hashers.

tarantool/src/network/protocol/codec.rs

@@ -56,6 +56,7 @@ crate::define_enum_with_introspection! {
     /// See `enum iproto_type` in \<tarantool>/src/box/iproto_constants.h for source
     /// of truth.
     #[non_exhaustive]
+    #[repr(C)]
     pub enum IProtoType {
         /// This packet is a response with status success.
         Ok = 0,