Added support for the apiary-aws causal repo protocol.
- This enables the CasualOS frontend to communicate with instances of the CasualOS Apiary AWS project.
- Use the CAUSAL_REPO_CONNECTION_PROTOCOL and CAUSAL_REPO_CONNECTION_URL environment variables to control which protocol and URL the frontend should connect to. See the README in aux-server for more info.
- Note that only the following features are supported for AWS Apiaries:
  - server.setupStory()
  - server.totalPlayerCount()
  - server.storyPlayerCount()
  - server.players()
- Webhooks are different when the story is hosted on an Apiary.
  - They require at least one device to have the story loaded for webhooks to function correctly.
  - They need to be sent to the Apiary host directly. Generally, this is not the same thing as auxplayer.com or casualos.com so you may need to ask the Apiary manager for it.
Added better support for static builds.
- Use the PROXY_CORS_REQUESTS environment variable during builds to disable support for proxying HTTP requests through the server.
- Use npm run tar:client after a build to produce a ./temp/output-client.tar.gz containing all the client code and assets. This can be deployed to S3 or a CDN for static hosting.
- Use npm run package:config to produce a ./temp/config.json which can be used for the /api/config request that the client makes at startup. Utilizes the environment variables from the README in aux-server to build the config.

Fixed an issue where it was not possible to change the color of GLTF meshes that did not have a mesh in the GLTF scene root.
Fixed an issue where bots created by the ab1 installer would not receive the @onStorySubscribed shout.