Generalize layout and make it consistent within `webviz-subsurface`

There are designs/layout/utility functions that probably should be generalized and e.g. offered through `webviz-core-components` and/or as common utility functions in `webviz-subsurface` / `webviz-config` package?

**Tasks:**
- [ ] Detect common design patterns/utilities that should be reusable.
- [ ] Move them to a common place (e.g. `webviz-core-components` and/or `webviz-subsurface` and/or `webviz-config`).
- [ ] Make layout more consistent throughout `webviz-subsurface` by reusing the same code.

**See:**
- https://webviz-subsurface-example.azurewebsites.net/parameter-analysis
- https://webviz-subsurface-example.azurewebsites.net/volumetric-analysis
- https://github.com/equinor/webviz-subsurface/pull/659