feat: reexport kysely and postgres from mod.ts

Author: fahchen

mod.ts

@@ -13,7 +13,7 @@ import {
 import { PostgresDriver } from "./src/postgres-driver.ts";
 import { PostgresDialectConfig } from "./src/postgres-dialect-config.ts";
 
-export { type DatabaseConnection, Pool } from "./deps.ts";
+export { type DatabaseConnection, kysely, Pool, postgres } from "./deps.ts";
 
 export class KyselyDenoPostgresDialect implements Dialect {
   readonly #config: PostgresDialectConfig;