Refactor delivery of accounting summary

crates/items_2/src/accounting.rs

@@ -8,6 +8,7 @@ use std::collections::VecDeque;
 #[derive(Debug, Serialize, Deserialize)]
 pub struct AccountingEvents {
     pub tss: VecDeque<u64>,
+    pub count: VecDeque<u64>,
     pub bytes: VecDeque<u64>,
 }
 
@@ -15,6 +16,7 @@ impl Empty for AccountingEvents {
     fn empty() -> Self {
         Self {
             tss: VecDeque::new(),
+            count: VecDeque::new(),
             bytes: VecDeque::new(),
         }
     }
@@ -31,6 +33,8 @@ impl Extendable for AccountingEvents {
         use core::mem::replace;
         let v = replace(&mut src.tss, VecDeque::new());
         self.tss.extend(v.into_iter());
+        let v = replace(&mut src.count, VecDeque::new());
+        self.count.extend(v.into_iter());
         let v = replace(&mut src.bytes, VecDeque::new());
         self.bytes.extend(v.into_iter());
     }