Split integration tests by Offline Store provider and online store provider

**Is your feature request related to a problem? Please describe.**
The CI should show integration tests for each Online/Offline store when they are run rather than having to look into the details section.

This can be done by splitting the tests in the action. More generally, it's better these tests run in parallel in the CI anyways.

**Describe the solution you'd like**
Updated CI.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.