Create test dataset designed for the shaping project

[lmeyerov]

To simplify development, we should create a powerbi dataset good for testing:

• multiple node attributes and of different types
• multiple edge attributes and of different types
• several node/edge attributes good for metrics

Ideally something fun and reusable by our users, like log activity data or transactions from some interesting system (bitcoin, ...), and potentially augmented for testing purposes

We can work with meagan on the process for this