Integrate vmmx-schema with virtual-mmx

[micahswitzer]

We need a way to access the data schemas located in the vmmx-schema repo from within this repo.

The possible options I see are:

1. Publish it to NPM as it's own package
2. Publish it to GitHub Packages
3. Include it as a Git submodule
4. Copy the code over manually

Personally, I believe that option number 1 is the best for these reasons:

• If people desire to use the schema in their own personal projects, it will already be available from the most widely used package repository for JavaScript packages.
• Since we already are using NPM with this repository, it will be natural to install/update the schema as a dependency
• We'd probably end up going down this path further down the road

Some disadvantages:

• It could potentially be tricky to deal with the CI/CD features of GitHub, but I also know that others wanted to automate different tasks so we'd probably be going down that road at some point anyways.
• The package will be public and other developers could download it thinking that it is complete/finalized while that is far from the reality. This is not really our problem but could lead to extraneous issues getting opened and thus more attention. We could probably somewhat mitigate this by only releasing dev/beta versions until we're pretty confident the schema is stable.
• Using NPM means another repository to keep updated, and thus more work for the maintainers.

Conclusion

If everybody's good with option 1, I can go ahead an create a PR with the appropriate changes and action steps. Otherwise, voice your thoughts here!

[micahswitzer]

Well it turns out that we've already addressed the immediate issue in this commit, so I'm going to take this idea and turn it into a proposal for publishing the schema repo as its own package over in that repo.