Export processed app size data report

At present, reporting app analysis within our organization using DevTools involves a somewhat manual process of noting the files that contribute more to the app size, as there is no export option and text is not selectable.

I attempted to make the text selectable, but copied text requires some further processing, which is not the cleanest approach. Therefore, I propose adding the following feature:

**Feature Proposal:**

Export Processed and Sorted Data to CSV: Allow users to export the analyzed and sorted data to a CSV file for easier reporting and analysis.

**Additional Context:**

The current manual process can be time-consuming and error-prone.
An export feature would streamline the reporting process and make data analysis more efficient.
Thank you for considering this feature request. I look forward to your feedback.

I have written some code for this feature, and it seems to be working well. If this feature is deemed beneficial for the broader community, I am willing to raise a PR for it.

首先在 DevTools 中找到应用分析视图，并检查该视图呈现的已处理、已排序数据。根据 issue 确认预期的 CSV 内容和导出交互；用户能够导出这些数据用于报告时，即视为完成。

由索引模型根据 Issue 内容生成。