Refine interface of hlir::framework::Instruction

[Candy2Tang]

PR types

Function optimization

PR changes

Others

Description

• DumpInstruction 函数没有修改成员变量，应该用 const 修饰
• GetInArgs、GetOutArgs等三个函数有两处可以优化：①用 const 修饰 ② 返回引用，避免copy

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[Candy2Tang]

@Ligoml 你好，我是从 #45347 热身打卡这里进来的，最近在学习CINN 框架的代码，看到有部分接口代码可以优化，故提了一个PR，想问下找谁review呢？

[luotao1]

hi, @Candy2Tang

• 非常感谢你对飞桨框架的贡献，我们正在运营一个PFCC组织，会通过定期分享技术知识与发布开发者主导任务的形式持续为飞桨框架做贡献，详情可见 https://github.com/luotao1 主页说明。
• 如果你对PFCC有兴趣，请发送邮件至 [email protected]，我们会邀请你加入~