style: 优化测试数据库表的创建语句格式

- 使用反引号括起字段名
- 调整字段间的空格和换行

Signed-off-by: ZhouXY108 <luquanlion@outlook.com>

src/test/resources/schema.sql

@@ -1,10 +1,10 @@
 CREATE TABLE sys_account (
-    id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY
+    `id` BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY
-    ,username VARCHAR(255) NOT NULL
+  , `username` VARCHAR(255) NOT NULL
-    ,account_status VARCHAR(2) NOT NULL
+  , `account_status` VARCHAR(2) NOT NULL
-    ,create_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+  , `create_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
-    ,created_by BIGINT NOT NULL
+  , `created_by` BIGINT NOT NULL
-    ,update_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+  , `update_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
-    ,updated_by BIGINT DEFAULT NULL
+  , `updated_by` BIGINT DEFAULT NULL
-    ,version BIGINT NOT NULL DEFAULT 0
+  , `version` BIGINT NOT NULL DEFAULT 0
 )