README portuguese Brazil version

[YlanzinhoY]

In Brazil we are quickly adopting Go for new services and I believe that kitex can be used, I am now creating the readme in Brazilian Portuguese but I also want to translate the documentation in the future.

[CLAassistant]

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[GuangmingLuo]

Hello, thanks for your PR and attention.
As for the PR, I prefer not to merge it. Adding a new version of Readme will increase the cost of maintaining.
If you want to share this project to more Brazilian, I would suggest to use AI for translation. If they want to read the code, English is a must.