Resolve "Automatically scale input scaling fields to global grid size"

What does this MR do?

• Add method to InterpolatorFactory that creates and interpolator using extension and offset information from a grid view
• Make keys extensions and offset in scaling_sections optional

Is there something that needs to be double checked?

No

Can this MR be accepted?

• Implemented features
• Added case in test-scaling-adapters to check if optional keys work
• Adapted unit tests
• Pipeline passing
• Update user docs
• Added entry to CHANGELOG.md

Related issues

Closes #120 (closed)