Enhance crop zoning features with new API integrations and UI updates

- Added Persian translations for legend levels in fa.json to improve localization.
- Updated CROP_ZONING_APIS.md to include new API endpoints for water need, soil quality, and cultivation risk, enhancing data retrieval capabilities.
- Refactored crop zoning components to support new data structures and improve rendering logic for different layers.
- Enhanced LayerControl and ZoneLegend components to dynamically display information based on the active layer, improving user experience.
- Implemented loading states and error handling in CropZoningWrapper for better data management during asynchronous operations.

messages/fa.json

@@ -544,6 +544,11 @@
       "cultivationRisk": "ریسک کشت"
     },
     "legend": "راهنمای رنگ‌ها",
+    "legendLevels": {
+      "low": "کم",
+      "medium": "متوسط",
+      "high": "زیاد"
+    },
     "crops": {
       "wheat": "گندم",
       "canola": "کلزا",