docs(pt-br): translate developer-tools page

[CaioAugustoo]

Esta PR está relacionada com a issue #555.

Alguns adendos:
Eu optei por traduzir a "React Developer Tools" para "Ferramenta de desenvolvedor do React". Caso não seja adequado, eu posso reverter essa alteração.

Eu optei, também, por usar as imagens da doc original. Eu usei essas imagens pois as imagens estavam quebradas (veja as alterações desse PR). Sobretudo, caso não seja adequado eu posso reverter.

[jhonmike]

LGTM

[github-actions]

Size Changes

📦 Next.js Bundle Analysis

This analysis was generated by the next.js bundle analysis action 🤖

One Page Changed Size

The following page changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/learn/react-developer-tools	204.01 KB (🟡 +114 B)	295.27 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

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