cli: fix rad inbox clear output

If multiple ids are specified for `rad inbox clear`, it would report
that only 1 item was cleared, when in fact multiple were.

This was found to be due to the SQL code returning a change count of
`1`. This is likely due to the way the statement is being reset each
time. The `sqlite` library does not seem to easily support the usage
of `IN` in a `WHERE` clause. So instead, the `count` is aggregated in
the loop and returned instead.

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett

radicle-cli/examples/rad-inbox.md

@@ -85,7 +85,7 @@ $ rad inbox show 1
 ```
 
 ``` ~alice
-$ rad inbox clear
+$ rad inbox clear 1 2
 ✓ Cleared 2 item(s) from your inbox
 $ rad inbox
 Your inbox is empty.

radicle/src/node/notifications/store.rs

@@ -196,12 +196,16 @@ impl Store<Write> {
                 .db
                 .prepare("DELETE FROM `repository-notifications` WHERE rowid = ?")?;
 
+            // N.b. we need to keep the count manually since the change count
+            // will always be `1` because of each reset.
+            let mut count = 0;
             for id in ids {
                 stmt.bind((1, *id as i64))?;
                 stmt.next()?;
                 stmt.reset()?;
+                count += self.db.change_count();
             }
-            Ok(self.db.change_count())
+            Ok(count)
         })
     }