Misc: Bundlesize plugin

[tlwr]

I came across siddharthkp/bundlesize in my GH feed. It allows you to cap the size of your project's bundled artifacts, either for use in CLI scripts, or in a CI pipeline.

For example (from their readme):

Given that everything goes through Travis, and we've frequently discussed artifact sizes, it would make sense for us to have a helper that clarified the current situation. I think bundlesize would be a good solution.

If we want this added then I'll do it and make a PR.

[n1474335]

@tlwr Good suggestion. There is also Size Limit which is an npm module that we could work into the build process.

I think there is a lot to be gained from analysing our dependencies, but I don't really want to enforce a hard size limit. Depending on the benefits, a large set of dependencies might be worth it. I would rather build an architecture that allows for lots of dependencies but doesn't load them all at once, like the module system in #173. It would be good to run these size tests over each of the compiled modules though, as they may be importing more than they need.

Let's wait until #173 is merged and then look into this.

[n1474335]

I'm going to close this for now as I don't want to restrict module sizes at the moment. Code weight is still an important aspect for this project, but I don't want to set specific limits. Each new library needs to be considered on its merits.