feature and plugin deprecations

[thescientist13]

Type of Change

Breaking

Summary

As we draw closer to the 1.0 release, this issue is aimed at tracking the deprecations (and deletions?) of various features and plugins from the Greenwood CLI

Details

Type	Name	Description
CLI	Eject	Technically Greenwood has an "eject" command, but its not really a use case worth supporting when we already have such an extensive set of plugin APIs now
Plugin	CommonJS	We pretty much handle CommonJS already, and now with require(esm) I don't think this hacky plugin is worth hanging on to anymore
Plugin	Google Analytics	This seems easy enough to maintain by the community, and well there are probably other better trackers to be using
Plugin	Import JSON	Already deprecated, just needs to be deleted
Plugin	Import CSS	Already deprecated, just needs to be deleted
Plugin	Puppeteer Renderer	Maybe too soon to delete this one, since it's the only reference implementation of our custom renderer? Could go either way on this one

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Although we should probably hold onto the GraphQL plugin, we should probably update Apollo, or maybe do we even need an Apollo client? 🤔