Most frequently used Nushell commands chapter

UPD: for those who are interested result are published here:
https://github.com/maxim-uvarov/nu-commands-frequency-stats/blob/main/aggregated_stats/aggregated-freq-stats20230911.csv

Work on the script is in progress

Guys, I think it would be cool to add a chapter to the book about the most frequently used Nushell commands to help newcomers prioritize their learning efforts.

To gather statistics from several nushell users, I wrote this script.

After running this script, it will produce two files: a CSV with the commands and their frequency that were used in your history for more than 10 times and a YAML-formatted txt file with some additional information (as github doesn't allow to upload files with YAML extension into the comments).

Please feel free to alter that data by either increasing the frequency threshold included in the CSV report commands or by not attaching the YAML.txt file if you believe it could somehow harm your privacy.

If you would like to contribute your data, please run the script and upload your files in this thread so we could aggregate the data from them.

The script will ask you if you want to include stats only about built-in commands or all the commands that you used. It is up to you how much information you want to share.

首先查看链接的 history-stats2.nu 脚本和已发布的 aggregated-freq-stats20230911.csv 结果，然后检查书中现有的章节结构。添加一个面向新手的章节，并使用收集到的命令频率数据，使其符合本书的文档风格，即视为完成。