Add "Copy to clipboard" button.

[Secrus]

This code allows for adding the "copy to clipboard" button using Hugo shortcodes. As not every code block needs to be copyable, the button will be added only to parts wrapped in {{% clipboard %}} ... {{% /clipboard %}} tags. After this is accepted and merged, I will prepare separate PR in the main repo, adding required tags to docs.

How to preview

As docs files are not kept with website code, previewing requires some legwork. Checkout this PR, setup the website (as in README) and manually add required tags in downloaded docs files.

[neersighted]

Code looks good -- let's just add comments to the SVG files with the license.

[branchvincent]

fyi, main is now using node 16. also, you can try out running locally with just make site

[Secrus]

@neersighted added licensing comments to SVGs

[b-kamphorst]

Hi @abn! I intended to work on #77 using this MR, but I now see that the changes have been reverted. Could you elaborate on the revert? In particular: are there certain changes that need to be made for this MR to be acceptable?

[Secrus]

Hi @abn! I intended to work on python-poetry/website#77 using this MR, but I now see that the changes have been reverted. Could you elaborate on the revert? In particular: are there certain changes that need to be made for this MR to be acceptable?

Hi! I am not Abn, but I will try to answer. Biggest issue was that with current setup there was no good plugin for rollup to bundle SVG files with icons for the button. It looked ok on previews, but when we deployed it to production, it broke all JS on our website and that caused a lot of issues. Feel free to work on that feature.

[b-kamphorst]

Hi @abn! I intended to work on python-poetry/website#77 using this MR, but I now see that the changes have been reverted. Could you elaborate on the revert? In particular: are there certain changes that need to be made for this MR to be acceptable?

Hi! I am not Abn, but I will try to answer. Biggest issue was that with current setup there was no good plugin for rollup to bundle SVG files with icons for the button. It looked ok on previews, but when we deployed it to production, it broke all JS on our website and that caused a lot of issues. Feel free to work on that feature.

OK. I have to admit that I am completely novel to hugo and JS, but this might be a nice time to get started (low prio though). Do you have any thoughts on (1) how to proceed and, perhaps more importantly, (2) how to test (and actually fail) before production?