Translate README.md to English

[kvaps]

Sorry, I don't know Chinese, the translation is made by ChatGPT.
Please correct if it is wrong.

[CLAassistant]

All committers have signed the CLA.

[the-label-bot]

The Label Bot has predicted the following:

Category	Value	Confidence	Applied Label
Kind	documentation	0.950	✔️
Size	M	0.984	✔️

[dongjiang1989]

Add README.en.md file for English？ @kvaps

[kvaps]

Hi @dongjiang1989,

The pingmesh-exporter was accepted into the Prometheus community 3 months ago, thanks to this, I discovered it:
https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-pingmesh-exporter

Therefore, I would like to ask: Is this project intended to be international? Should the README.md be in English, with an additional README.cn.md for Chinese? Or is it not meant to be international, thus README.md should be in Chinese, and an additional README.en.md for English?

[dongjiang1989]

https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-pingmesh-exporter

Thank you for your contribution.
Currently, most users of this project are Chinese users. But internationalization is our goal and will be implemented.

[kvaps]

Okay then, I added it as separate README.en.md file