Added a new example file `import-graphTypes.js` to showcase how to selectively import the `graphTypes` module, highlighting usage of `GraphNoun`, `GraphVerb`, `NounType`, and `VerbType`.
Changed package name and imports to use the @soulcraft scope. Updated `README.md` to reflect the use of a private npm package and added publishing/installing instructions. Configured `package.json` with `private: true` and restricted access for publishing. Updated demo link to the correct GitHub repository.
