Feature: Store data of different apps inside Storex Hub

[ShishKabab]

The base work for this is already done, but needs some improvements. Namely, right now different can register collections by naming their collections <app name>:<collection name>. This 1) makes it more difficult for users to adapt their existing code written for a single-user experience because all of their collection name references need to change, and 2) even though it's short, we want to prevent name collisions by adopting a reverse-domain naming scheme.

Tasks:

• Change executeOperation call to automatically start queries in an apps own tables
• Improve schema building function, which currently just meshes the schemas of all different applications together.