Sample Tutorial: Port multi-user capabilities tutorials to MRTK3

[AMollis]

This issue has been migrated a new MRTK repository, and the status of this issue will now be tracked at the following location:

• Sample Tutorial: Port multi-user capabilities tutorials to MRTK3 MixedRealityToolkit/MixedRealityToolkit-Unity#120

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Overview

We should port the "multi-user capablities" tutorial to MRTK3. This tutorial can be found at
https://learn.microsoft.com/en-us/windows/mixed-reality/develop/unity/tutorials/mr-learning-sharing-01.

Details

This tutorial demonstrates how a user can build a collaborative application using ASA and Photon. Using this tutorial, a developer will learn the following:

• Learn how to create a PUN app and connect your Unity project to it
• Learn how to connect multiple users in a shared experience
• Learn how to share the object movements with other users

Additional Context

A recent user of this tutorial found a potential bug in the sample. We should also verify that this issue is resolved when porting to MRTK3

• Multi-user capabilities - coordinate system of the different players dosen't line up Azure/azure-spatial-anchors-samples#403