Add copy button to code snippets

[Complexlity]

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1. Description of the Feature Request:

Similar to the universal style to coding blocks, I would be an improvement if there's a copy button on code blocks to easily get the entire code without having to highlight it all (especially for long code blocks)

2. Acceptance Criteria:

-[x] A simple copy code button

3. Additional Information:

An example of it

[KevinMulhern]

Hey @Complexlity, thanks for the suggestion.

I can see something like being useful for installation snippets, we tell learners to copy and paste those anyway to avoid issues.

But I don't think we should enable this for code examples. From a learning perspective, theres a lot to be gained from manually typing code examples out:

• Building muscle memory with new syntax.
• Opportunities to understand and play with new concepts as you type it out.
• Getting used to debugging when typos are inevitably made.

I'd definitely like more opinions on this though.