feat: implement sponge commands

pkg/sql2code/test.sql

@@ -0,0 +1,16 @@
+create table user
+(
+    id         bigint unsigned auto_increment
+        primary key,
+    created_at datetime        null,
+    updated_at datetime        null,
+    deleted_at datetime        null,
+    name       char(50)        not null comment '用户名',
+    password   char(100)       not null comment '密码',
+    email      char(50)        not null comment '邮件',
+    phone      bigint unsigned not null comment '手机号码',
+    age        tinyint         not null comment '年龄',
+    gender     tinyint         not null comment '性别，1:男，2:女，3:未知',
+    constraint user_email_uindex
+        unique (email)
+);