Make Implementations command/code copy-pastable

[h4l0gen]

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Description of issue or feature request: Currently, the implementation command/code is not copy-pastable. Giving an copy option in top right corner of code's box would address this issue. With this, we can pass the CNCF assessment criteria.

Current behavior: Not copy-pastable

Expected behavior: Should be copy-pastable.

[h4l0gen]

I will create PR for this.

[h4l0gen]

@JustinCappos what you think on this. As per last point of this criteria of CNCF assessment, we should have copy-pastable code. And we lack in that here.

[jku]

the implementation command/code is not copy-pastable.

The commands are copy-pastable just fine.

I'm not against adding a copy button if that's easily doable in Sphinx (but adding e.g. new doc build dependencies for this does not sound useful).

[h4l0gen]

Okay, I will give it a try, if that's easy to add, I will create PR. Thankyou.