Add openrpc API

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

src/models/flow.rs

@@ -4,7 +4,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::time::Timestamp;
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Flow {
     /// Job Id set tby the actor which created it
     id: u32,
@@ -24,7 +24,7 @@ pub struct Flow {
 }
 
 /// The status of a flow
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Clone)]
 pub enum FlowStatus {
     Dispatched,
     Started,