Add comprehensive tests for Parks API and models

- Implemented extensive test cases for the Parks API, covering endpoints for listing, retrieving, creating, updating, and deleting parks.
- Added tests for filtering, searching, and ordering parks in the API.
- Created tests for error handling in the API, including malformed JSON and unsupported methods.
- Developed model tests for Park, ParkArea, Company, and ParkReview models, ensuring validation and constraints are enforced.
- Introduced utility mixins for API and model testing to streamline assertions and enhance test readability.
- Included integration tests to validate complete workflows involving park creation, retrieval, updating, and deletion.

config/settings/database.py

@@ -0,0 +1,25 @@
+"""
+Database configuration for thrillwiki project.
+"""
+
+import environ
+
+env = environ.Env()
+
+# Database configuration
+DATABASES = {
+    'default': env.db(),
+}
+
+# GeoDjango Settings - Environment specific
+GDAL_LIBRARY_PATH = env('GDAL_LIBRARY_PATH', default=None)
+GEOS_LIBRARY_PATH = env('GEOS_LIBRARY_PATH', default=None)
+
+# Cache settings
+CACHES = {
+    'default': env.cache('CACHE_URL', default='locmemcache://')
+}
+
+CACHE_MIDDLEWARE_SECONDS = env.int('CACHE_MIDDLEWARE_SECONDS', default=300)  # 5 minutes
+CACHE_MIDDLEWARE_KEY_PREFIX = env('CACHE_MIDDLEWARE_KEY_PREFIX', default='thrillwiki')
+