Coolpi 4b user guide for developer

[大法师]

文档包含镜像使用方法及镜像更新备份操作说明，敬请查阅！

Cool Pi 4 model B用户手册20221014.pdf

[大法师]

更新硬件接口说明以及常用配件描述

Cool Pi 4 Model B用户手册V1.1.pdf

[sushruth]

Can you please translate the guide to English?

[murraytodd]

cool-pi-4-model-b-v1.1-english.pdf

Due to the magical powers of Google Translate, here is an English version of the user's guide!

[jack_admin]

@murraytodd thanks!