Adding variables to be able to change the asset url-s for the Architecture and Rock kit without the need to rebuild the docker container

[LennyL]

At the moment the default url-s for the Architecture and Rock kit assets aren´t alive anymore and you have to rebuild Spoke to change them.

Describe the solution you'd like For example in case of a Kubernetes deployment it would be useful if these url-s could be changed by passing variables to the container.

The place of the url-s:

https://github.com/Hubs-Foundation/Spoke/blob/80ea65e871c1475ebf6a696cb3a6077725667d87/src/ui/assets/sources/ArchitectureKitSource.js#L8

https://github.com/Hubs-Foundation/Spoke/blob/80ea65e871c1475ebf6a696cb3a6077725667d87/src/ui/assets/sources/RockKitSource.js#L6