Add grid data from Sumo using ri-cloud-api
Load Eclipse grid data (roff) from Sumo as RimReservoirGridEnsemble, one case per realization, with async fetch of grid properties per timestep.
- New: RiaSumoGrid (transport), RifReaderSumoGridProperty (lazy property reader), RimReservoirGridEnsembleSumo, RimRoffCaseSumo, and a "Create Reservoir Grid Ensemble" command.
- Shared grid: IJK dimensions compared before download; one RigMainGrid is reused across the ensemble when they match, each realization still parses its own ACTNUM before releasing geometry.
- Rename folders: Summary/Sumo -> Summary/Cloud, RimSumoDataSource -> Cloud/ (PDM keywords unchanged, old project files still load).
- UI: cloud data sources also shown in the 3D window's Data Sources dock.
- Fix: realizations no longer lost on project reload; realizations missing data are now reported instead of silently skipped.
* #14319 Compute all pending ensemble contour maps in one sweep over realizations
* #14319 Initialize result definition and open primary case before building contour map grid
* Contour Map: Compute histogram from map projection values to show correct sample count in overlay info
* #14319 Add comments describing the realization sweep and grid caching
Document why the realization loop is the outer loop, when a realization case is
closed again after processing, and that the contour map grid doubles as the
"statistics computed" flag in ensureResultsComputed().
mainGrid(), unionOfActiveCells(), computeUnionOfActiveCells(), and statisticsCaseCollection() default to null/no-op. Remove redundant overrides from RimEclipseCaseEnsemble.
Introduce RimReservoirGridEnsemble and RimReservoirGridEnsembleBase to manage ensembles of grid-only Eclipse cases. Enable detection of identical grids for shared operations and statistics. Integrate grid ensembles into project structure, UI, and menu system. Refactor statistics and view handling to support both case groups and grid ensembles via a common interface. Add deferred grid loading, robust case referencing, and migration for well data source fields. New features and menu items allow creation and management of grid ensembles from file sets, enabling new workflows for grid-only ensemble analysis.