feat: add iproto_type::SQL_INFO marker

Author: Кирилл Безуглый

CHANGELOG.md

@@ -11,6 +11,7 @@
 - `network::protocol::SyncIndex::get` method
 - `network::protocol::codec::{LegacyCall, Nop, Prepare, Begin, Commit, Rollback}` variants 
 - `network::protocol::codec::Header::encode_from_parts` function
+- `network::protocol::codec::iproto_key::SQL_INFO` constant
 
 ### Changed
 

tarantool/src/network/protocol/codec.rs

@@ -41,6 +41,7 @@ pub mod iproto_key {
     // ...
     pub const SQL_TEXT: u8 = 0x40;
     pub const SQL_BIND: u8 = 0x41;
+    pub const SQL_INFO: u8 = 0x42;
     // ...
     pub const STMT_ID: u8 = 0x43;
     // ...