feat:[shell] Add FINSH_SEM_NAME macro definition for unified semaphore naming

[wdfk-prog]

拉取/合并请求描述：(PR description)

[

为什么提交这份PR (why to submit this PR)

• FINSH_SEM 可能需要在其他地方被寻找,进而进行控制或删除.例如qboot中重新接管了控制台的操作
• 由于finsh 信号量是无法被外面调用,所以将finsh 信号量的名称进行宏定义,方便寻找

你的解决方案是什么 (what is your solution)

请提供验证的bsp和config (provide the config and bsp)

• BSP:

• .config:

• action:

]

当前拉取/合并请求的状态 Intent for your PR

必须选择一项 Choose one (Mandatory):

• [ ] 本拉取/合并请求是一个草稿版本 This PR is for a code-review and is intended to get feedback
• [ ] 本拉取/合并请求是一个成熟版本 This PR is mature, and ready to be integrated into the repo

代码质量 Code Quality：

我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:

• [ ] 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
• [ ] 代码风格正确，包括缩进空格，命名及其他风格 Style guide is adhered to, including spacing, naming and other styles
• [ ] 没有垃圾代码，代码尽量精简，不包含#if 0代码，不包含已经被注释了的代码 All redundant code is removed and cleaned up
• [ ] 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP All modifications are justified and not affect other components or BSP
• [ ] 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
• [ ] 代码是高质量的 Code in this PR is of high quality
• [ ] 已经使用formatting 等源码格式化工具确保格式符合RT-Thread代码规范 This PR complies with RT-Thread code specification
• [ ] 如果是新增bsp, 已经添加ci检查到.github/ALL_BSP_COMPILE.json 详细请参考链接BSP自查

[github-actions[bot]]

📌 Code Review Assignment

🏷️ Tag: components

Reviewers: Maihuanyi

Changed Files (Click to expand)

• components/finsh/shell.c
• components/finsh/shell.h

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📊 Current Review Status (Last Updated: 2025-09-11 08:22 CST)

• ✅ Maihuanyi Reviewed On 2025-09-10 15:59 CST

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📝 Review Instructions

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[Maihuanyi]

LGTM

[meng-plus]

此提交包含#10678 的内容，注意改动内容与提交内容的对应

[wdfk-prog]

此提交包含#10678 的内容，注意改动内容与提交内容的对应

٩( 'ω' )و get！