Add an option to run the NPM build command in the action

[caendesilva]

Discussed in hydephp/hyde#256

^{Originally posted by ydalton May 5, 2024}
The thing is, the reason I wanted this is so that I could have the HydePHP GitHub actions automatically compile the Tailwind classes on deployment, but I don't see how to do it.

Originally posted by @ydalton in hydephp/hyde#256 (comment)

[caendesilva]

Assigning myself so we can prioritise this.

[caendesilva]

I think compile_assets: true is a good key for this.

[caendesilva]

A workaround for now is to have a separate workflow that compiles assets on push.

[caendesilva]

Would be nice if we supported arbitrary build arguments then we could pass --run-prod