quicktour.mdx en -> pt translation (#17074)
* Quicktour Portuguese Translation
Translated quicktour.mdx until line 161
* Finished translating quicktour.mdx
Ready to upload and adjust eventual .mdx or translation mistakes.
* Add _toctree.yml and fix nits
* Fixed pt-br mdx syntax problem
Closed <frameworkcontent> instance
* Changed </frameworkcontent> line
* Copied missing block from english version of quicktour.mdx
* Reviwed the entire file once again. It should be working now.
Co-authored-by: Omar U. Espejel <espejelomar@gmail.com>
