feat(http): calculate updates' and uuids' dbs size

meilisearch-http/src/index_controller/mod.rs

@@ -356,6 +356,16 @@ impl IndexController {
 
         Ok(self.index_handle.get_index_stats(uuid).await?)
     }
+
+    pub async fn get_updates_size(&self, uid: String) -> anyhow::Result<u64> {
+        let uuid = self.uuid_resolver.get(uid.clone()).await?;
+
+        Ok(self.update_handle.get_size(uuid).await?)
+    }
+
+    pub async fn get_uuids_size(&self) -> anyhow::Result<u64> {
+        Ok(self.uuid_resolver.get_size().await?)
+    }
 }
 
 pub async fn get_arc_ownership_blocking<T>(mut item: Arc<T>) -> T {