add support for operators

src/data.rs

@@ -745,7 +745,10 @@ impl BrainData {
         let mut operator = match self.operators.get(&req.pubkey) {
             Some(o) => (*(o.value())).clone(),
             None => OperatorData {
-                ..Default::default()
+                escrow: req.escrow,
+                email: req.email,
+                banned_users: HashSet::new(),
+                vm_nodes: HashSet::new(),
             },
         };
         if req.escrow < 5000 {
@@ -758,9 +761,8 @@ impl BrainData {
             account.balance = account.balance + operator.escrow - req.escrow;
             operator.escrow = req.escrow;
         }
-        operator.email = req.email;
         self.operators.insert(req.pubkey, operator);
-        Ok(())
+        Err(Error::InsufficientFunds)
     }
 
     pub fn find_vm_nodes_by_operator(&self, operator_wallet: &str) -> Vec<VmNode> {