docs: add Table icons in theming icons section

docs/content/1.getting-started/3.theming.md

@@ -190,6 +190,18 @@ export default defineAppConfig({
           icon: 'i-octicon-search-24'
         }
       }
+    },
+    table: {
+      default: {
+        sortAscIcon: 'i-octicon-sort-asc-24',
+        sortDescIcon: 'i-octicon-sort-desc-24',
+        sortButton: {
+          icon: 'i-octicon-arrow-switch-24'
+        },
+        emptyState: {
+          icon: 'i-octicon-database-24'
+        }
+      }
     }
   }
 })