[feature][v5.1.1][tools] Refactoring and improving the scons --dist packaging command

[ZhaoCake]

拉取/合并请求描述：(PR description)

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为什么提交这份PR (why to submit this PR)

The issue #8592 mentioned the need to promote the refactoring and improvement of the scons --dist packaging command.

And the issue #9878 suggested LWP_DEBUG should be closed by default

你的解决方案是什么 (what is your solution)

1. By reading in the. config file under bsp, copy the contents of components in a targeted manner to reduce the size of the package
2. Further remove some non essential folders such as __pycache__
3. Generate information about this packaging at the same time as executing the command, dist_deadme.md

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

• BSP: qemu-virt64-riscv

• .config: default config, and I also modify some config to test.

I cannot be sure if this solution is stable, in fact, due to the existence of some directories that are not included in the processing method I provided, a necessary directory list is also maintained.
If we could use compile_commands.json to perform the step of selecting a specific file for packaging, I think it would be very enjoyable. But this will introduce unnecessary dependencies bear, as Scons does not seem to have a built-in tool for generating compile_commands.json. So I am not sure if I should use it.

• action:

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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/workflows/bsp_buildings.yml 详细请参考链接BSP自查

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