Add EcoFish Modeled Predicted Fish Presence Data (Lowest)

**Describe the task**
Add EcoFish Modeled Predicted Fish Presence Data

**Purpose**
WALLY users are able to understand where important provincial fish species may be present.

**Acceptance Criteria**
- [ ] EcoFish Modeled Predicated Fish Presence data added to WALLY
- [ ] TO BE CONFIRMED: Convert CSV to shapefile

**Additional context**
- - This was another request from multiple staff made to the WALLY team before they left. It is unclear if this was in the progress of being incorporated, but does not appear to have been included in the tool as it currently functions.
- There are spreadsheets with this data available to incorporate if that is helpful (part of a regional contract completed a few years ago, and based on watershed polygons).
- Appears this layer is proprietary dataset, and not in BC Data Catalogue

**Questions**
- Aside from the spreadsheets, where would the data be pulled from?
- Is the task to just import the spreadsheet data?
- How often is the data updated?

No files, tests, or entry points are named. First confirm which spreadsheet contains the EcoFish data, whether it may be imported, whether CSV-to-shapefile conversion is required, and how often the source is updated. Done means the approved data is added to WALLY and the provenance, format, and update expectations are resolved.

Written by the indexing model from the issue text.