feature: pq迁移新增citext扩展

migrations/000001_create_movies_table.down.sql

@@ -1 +1,2 @@
+DROP EXTENSION IF EXISTS citext;
 DROP TABLE IF EXISTS movies;

migrations/000001_create_movies_table.up.sql

@@ -1,3 +1,4 @@
+CREATE EXTENSION IF NOT EXISTS citext;
 CREATE TABLE IF NOT EXISTS movies (
   id bigserial PRIMARY KEY,
   created_at timestamp(0) with time zone NOT NULL DEFAULT NOW(),