Suggestions for functionality that migth be implemented in Webviz

I have gathered a list of typical visualisations and analysis functionality that people in the FMU community might have to implement in another tool than Webviz. Maybe some of this can be implemented in Webviz in some way at some point:

- [ ] #784
- [x] General scatter plotting functionality. Between summary data and parameters, but also other output like f.ex the volumetrics tables.
- [ ] Plotting other time series than summary vectors in the TimeSeries visualisation. It can be f.ex ecalc-output or other time series you want to calculate yourself, but is to advanced for the vector calculator. In the old webviz it is possible to open the summary arrow file and add columns.
- [ ] Visualisation of discrete vectors in the TimeSeries plotter (f.ex WMCTL). Statistics makes no sense, but f.eks an area plot can be useful (like in the `WellAnalysis` plugin in the `webviz-subsurface`).
- [ ] #786
- [ ] Recovery factor/production per region and zone (and facies/source/ensemble). Kind of like the functionality in `VolumetricAnalysis`, but for dynamic data.
- [ ] Production/injection per well and being able to compare ensembles (Something like `WellAnalysis` in `webviz-subsurface`).

This issue is a broad wishlist covering scatter plots, additional and discrete time series, regional recovery factors, and well production or injection comparisons. No files, tests, entry points, or single acceptance criterion are named; first split one item into a scoped issue, then define the affected visualization and what completion means.

Written by the indexing model from the issue text.