SFMS: Prototype spatial FBP System calculations

**Describe the task**
Using a sample dataset, demonstrate the ability to calculate FBP System outputs across spatial raster inputs.

**Acceptance Criteria**
- [ ] FBP System outputs for Head Fire Intensity and Rate of Spread are output as spatial rasters
- [ ] Quantify data storage requirements for one day of calculations at a specified grid resolution (ideally 250 m).
- [ ] Quantify processing time for calculations, i.e.) how long after noon weather is observed will it take for FWI System outputs to be available for viewing?

**Additional context**
- The FBP System produces 4 calculated system components, 8 primary outputs, and 12 secondary outputs.
- For demonstration purposes the more relevant outputs to show are Head Fire Intensity and Rate of Spread.

No files, tests, or entry points are named. Start by locating the sample dataset and the FBP/FWI calculation entry point, then establish how spatial raster outputs will be produced and measured. Done means Head Fire Intensity and Rate of Spread rasters are demonstrated, with one-day storage and post-noon processing time quantified at the target grid resolution.

Written by the indexing model from the issue text.