Add Serialize/Deserialize impls for matrix_sdk::Session.

matrix_sdk_base/src/session.rs

@@ -15,11 +15,13 @@
 
 //! User sessions.
 
+use serde::{Serialize, Deserialize};
+
 use matrix_sdk_common::identifiers::{DeviceId, UserId};
 
 /// A user session, containing an access token and information about the
 /// associated user account.
-#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+#[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
 pub struct Session {
     /// The access token used for this session.
     pub access_token: String,