Add Web Builds to build_apps

[raytopianprojects]

Description

Allow the creation of web builds using the build_apps command line tool.

Use Case

Being able to create builds of my games for the web just using build_apps would simplify my pipeline and make it easier for others too.

[rdb]

I don't know how feasible this is, I was thinking we might need a separate build pipeline for web apps, probably something based around mypyc rather than freezing due to the relative inefficiency of running frozen code and the probably inescapable requirement of having to compile code from source anyway to create an efficient and slim build.

Though, perhaps this build pipeline could just use the same options and configuration as build_apps.

[raytopianprojects]

If it is possible to have the pipeline just use the options and configurations from build_apps that would that'd still solve the issue but of course if that's not possible a separate build pipeline would work great too!😄