feat: copy button for codeblocks (just in articles) added

[Ivanrenes]

What

Copy Button For Codeblocks

Why

Select and copy is a painful task for devs ;)

Testing?

Every codeblock contains in its bottom-right part a button that allows the user copy the codeblock content.

• Go to an article
• Check a codeblock bottom-ritght button
• Click on copy
• Then check copied content pasting it in whatever textbox/document

Screenshots (optional)

[vercel[bot]]

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[Ivanrenes]

@midudev