fix: Make SecretString public (#5269)

* fix: make secret string public

Signed-off-by: Lohachov Mykhailo <lohachov@soramitsu.co.jp>

* fix: Update crates/iroha/src/secrecy.rs

Co-authored-by: Shunkichi Sato <49983831+s8sato@users.noreply.github.com>
Signed-off-by: Mykhailo Lohachov <lohachov@soramitsu.co.jp>

---------

Signed-off-by: Lohachov Mykhailo <lohachov@soramitsu.co.jp>
Signed-off-by: Mykhailo Lohachov <lohachov@soramitsu.co.jp>
Co-authored-by: Shunkichi Sato <49983831+s8sato@users.noreply.github.com>

crates/iroha/src/lib.rs

@@ -5,7 +5,7 @@ pub mod config;
 pub mod http;
 mod http_default;
 pub mod query;
-mod secrecy;
+pub mod secrecy;
 
 pub use iroha_crypto as crypto;
 pub use iroha_data_model as data_model;

crates/iroha/src/secrecy.rs

@@ -1,12 +1,15 @@
+//! Types for representing securely printable secrets.
 use std::fmt;
 
 use derive_more::Constructor;
 use serde::{Deserialize, Serialize, Serializer};
 
+/// String sensitive to printing and serialization
 #[derive(Clone, Deserialize, Constructor)]
 pub struct SecretString(String);
 
 impl SecretString {
+    /// Returns underlying secret string
     pub fn expose_secret(&self) -> &str {
         &self.0
     }