Add demo for Vue

[paulrosen]

I did the demo for Vue - it will need to be linked somewhere so it is discoverable.

I will add a Nuxt demo tomorrow if I have time, so I plan to add to this PR.

I wanted to know if I'm on the right track, though.

[paulrosen]

And this is assuming that the esm branch will be published to npm. In the meantime, after npm install @webcoder49/code-input, go to the package.json file and change to the github path.

[WebCoder49]

@paulrosen This is great! However, you might want to name it specifically for highlight.js and I or you can make very similar ones for Prism.js. Also, it is evidently written for people who already know (to a basic degree) how to use and are using the framework so a message to this effect at the top would be good.

[WebCoder49]

I won't merge this right now because I've not got the docs directory structure fully worked out yet, but it generally looks good to me with the adjustments I have mentioned! Thank you so much for helping throughout the whole ESM porting and testing.

[paulrosen]

I've added the Nuxt demo, so I'm not planning any other changes now.

[WebCoder49]

Thank you so much, @paulrosen! I will merge it very soon.