Add Redis service and Celery configuration to Docker setup

- Introduced Redis service in both docker-compose files for production and development.
- Updated web and celery services to use Redis as the broker and result backend.
- Added necessary environment variables for Celery in settings.py.
- Included new tasks and soil_data apps in Django settings and updated URL routing.
- Updated requirements.txt to include Celery and Redis dependencies.

soil_data/apps.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class SoilDataConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "soil_data"
+    verbose_name = "Soil Data (SoilGrids)"