feat: add operations column in backend trace view (#674)

* feat: add operations column in backend trace view

* fix: uses updated attribute key for backendOperation

* fix: column width for operation column

* chore: renames key backendOperation to operation

Author: JBAhire

projects/observability/src/pages/apis/backend-detail/traces/backend-trace-list.dashboard.ts

@@ -29,6 +29,16 @@ export const backendTraceListDashboard = {
           attribute: 'name'
         }
       },
+      {
+        type: 'table-widget-column',
+        title: 'Operation',
+        width: '10%',
+        filterable: true,
+        value: {
+          type: 'attribute-specification',
+          attribute: 'operation'
+        }
+      },
       {
         type: 'table-widget-column',
         title: 'Duration',