make code elements copiable to help with improving the flow state on mobile devices.

[Sboonny]

We have two ways to display code: <code>code tags</code> and code blocks

As pointed by Ahmad, we can add feature that copy code tags when you interact with them, on mobile devices.

And for code blocks, we can display icon like the one in docs which copy the block if needed.

Originally posted by @ahmadabdolsaheb in #518 (comment)

[a2937]

I guess a new file gets put in here with that functionality then?