重新启用 gskctl, 一个基于 dsl 的代码生成工具

为了确保写出来的代码一定是高效稳定的，我重新启用 gskctl 了。

用 AI 写模板，用它生成代码，好像还不错。

type UserRepository interface {
	// @QueryRow("select * from User where Id = :id")
	GetUser(ctx context.Context, id uint64) (User, error)

	// @Query("select U.Id, U.Name, T.Name as TeamName from User as U left join Team as T where U.Active is true and (U.Name like :name or T.Name is null) order by U.Name limit :limit offset :offset")
	ListUsers(ctx context.Context, name string, limit int, offset int) ([]ListUsersRow, error)

	// @Create("insert into User (Id, Name, Active) values (:id, :name, true) on conflict (Id) do update set Name = excluded.Name returning *")
	UpsertUser(ctx context.Context, id uint64, name string) (User, error)

	// @Update("update User set Name = coalesce(:name, Name) where Id = :id returning Id, Name")
	RenameUser(ctx context.Context, name string, id uint64) ([]RenameUserRow, error)

	// @Delete("delete from User where Id = :id")
	DeleteUser(ctx context.Context, id uint64) (sql.Result, error)
}