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.

tasks/celery_tasks.py

@@ -0,0 +1,15 @@
+import time
+
+from config.celery import app
+
+
+@app.task(bind=True)
+def sample_task(self, duration: int = 1):
+    """تسک نمونه برای تست. duration تعداد ثانیه‌ای که تسک طول می‌کشه."""
+    for i in range(duration):
+        self.update_state(
+            state="PROGRESS",
+            meta={"current": i + 1, "total": duration, "message": "در حال پردازش..."},
+        )
+        time.sleep(1)
+    return {"status": "completed", "duration": duration}