Convert jobs to messages

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

src/rpc.rs

@@ -541,6 +541,23 @@ pub fn build_module(state: Arc<AppState>) -> RpcModule<()> {
             })
             .expect("register flow.dag");
     }
+    {
+        let state = state.clone();
+        module
+            .register_async_method("flow.start", move |params, _caller, _ctx| {
+                let state = state.clone();
+                async move {
+                    let p: FlowLoadParams = params.parse().map_err(invalid_params_err)?;
+                    let started: bool = state
+                        .service
+                        .flow_start(p.context_id, p.id)
+                        .await
+                        .map_err(storage_err)?;
+                    Ok::<_, ErrorObjectOwned>(started)
+                }
+            })
+            .expect("register flow.start");
+    }
 
     // Job
     {