Remove table.isVector feature altogether. All vector features are handled per column

README.md

@@ -241,7 +241,6 @@ interface BUN_MARIADB_TableSchemaType {
     parentTableName?: string; // inherit / merge fields from another table
     tableNameOld?: string; // rename: old name triggers ALTER TABLE RENAME
     collation?: "utf8mb4_bin" | "utf8mb4_unicode_520_ci";
-    isVector?: boolean; // mark as vector-oriented table
 }
 ```
 
@@ -743,7 +742,6 @@ MariaDB native `VECTOR(n)` columns and `VECTOR INDEX` are supported (MariaDB 11.
 ```ts
 {
     tableName: "documents",
-    isVector: true,
     fields: [
         {
             fieldName: "embedding",