feat: impl Refresh Ngram Index (#18128)

* feat: impl `Refresh Ngram Index`

* chore: refresh ngram & bloom index

* chore: use `load_index_meta` for refresh ngram index

* chore: impl reusing index blocks & check create ngram index on one column

* chore: codefmt

Author: KKould

Cargo.lock

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 pub mod handler;
+pub mod ngram_index;
 pub mod vacuum_drop_tables;
 pub mod vacuum_table;
 pub mod vacuum_table_v2;