Include @id on forward message (#502)

Signed-off-by: Miroslav Kovar <miroslav.kovar@absa.africa>

Co-authored-by: Miroslav Kovar <miroslav.kovar@absa.africa>

Author: mirgee

aries_vcx/src/messages/a2a/mod.rs

@@ -415,6 +415,7 @@ pub mod test_a2a_serialization {
         // serialization
         let val: Value = serde_json::from_str(&serialized).unwrap();
         assert_eq!(val["@type"], Value::String("did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/routing/1.0/forward".into()));
+        assert_eq!(val["@id"], Value::String("testid".into()));
     }
 
     #[test]

aries_vcx/src/messages/forward.rs

@@ -1,7 +1,10 @@
 use crate::error::prelude::*;
+use crate::messages::a2a::MessageId;
 
 #[derive(Clone, Serialize, Deserialize, Debug, PartialEq, Default)]
 pub struct Forward {
+    #[serde(rename = "@id")]
+    pub id: MessageId,
     pub to: String,
     #[serde(rename = "msg")]
     pub msg: serde_json::Value,
@@ -13,6 +16,7 @@ impl Forward {
             .map_err(|err| VcxError::from_msg(VcxErrorKind::InvalidState, err))?;
 
         Ok(Forward {
+            id: MessageId::new(),
             to,
             msg,
         })
@@ -35,6 +39,7 @@ pub mod tests {
 
     fn _forward() -> Forward {
         Forward {
+            id: MessageId::default(),
             to: _to(),
             msg: _msg(),
         }