[component/lwp]add annotation for lwp elf.

[GorrayLi]

拉取/合并请求描述：(PR description)

[

为什么提交这份PR (why to submit this PR)

add annotation for lwp elf.

你的解决方案是什么 (what is your solution)

add annotation for lwp elf.

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

[BernardXiong]

感谢提交，不过lwp部分后续会进行一定重构，后续一些注释等方面的，等重构结束后再来推进吧。

[Copilot]

Pull Request Overview

This PR adds comprehensive annotations and documentation to the ELF loading functions within the LWP component, along with a minor copyright update.

• Updated copyright year
• Added detailed doc comments for functions and structure members
• Refactored inline comments to improve code clarity

[Copilot]

[nitpick] Consider revising the comment for improved clarity and proper sentence flow, e.g., 'When both the segment's virtual address and the load base are 0, the segment is loaded at any available address rather than a fixed one. This is particularly useful for PIC or shared libraries.'

Suggested change

	/* When both the segment's virtual address and the load base are 0, it indicates that the segment should be loaded
	at any available address rather than a fixed one. particularly useful for PIC or shared libraries.*/
	/* When both the segment's virtual address and the load base are 0, the segment is loaded at any available
	address rather than a fixed one. This behavior is particularly useful for Position-Independent Code (PIC)
	or shared libraries. */