feat(rides): populate slugs for existing RideModel records and ensure uniqueness

- Added migration 0011 to populate unique slugs for existing RideModel records based on manufacturer and model names.
- Implemented logic to ensure slug uniqueness during population.
- Added reverse migration to clear slugs if needed.

feat(rides): enforce unique slugs for RideModel

- Created migration 0012 to alter the slug field in RideModel to be unique.
- Updated the slug field to include help text and a maximum length of 255 characters.

docs: integrate Cloudflare Images into rides and parks models

- Updated RidePhoto and ParkPhoto models to use CloudflareImagesField for image storage.
- Enhanced API serializers for rides and parks to support Cloudflare Images, including new fields for image URLs and variants.
- Provided comprehensive OpenAPI schema metadata for new fields.
- Documented database migrations for the integration.
- Detailed configuration settings for Cloudflare Images.
- Updated API response formats to include Cloudflare Images URLs and variants.
- Added examples for uploading photos via API and outlined testing procedures.

backend/apps/rides/models/media.py

@@ -9,6 +9,7 @@ from django.db import models
 from django.conf import settings
 from apps.core.history import TrackedModel
 from apps.core.services.media_service import MediaService
+from cloudflare_images.field import CloudflareImagesField
 import pghistory
 
 
@@ -36,9 +37,9 @@ class RidePhoto(TrackedModel):
         "rides.Ride", on_delete=models.CASCADE, related_name="photos"
     )
 
-    image = models.ImageField(
-        upload_to=ride_photo_upload_path,
-        max_length=255,
+    image = CloudflareImagesField(
+        variant="public",
+        help_text="Ride photo stored on Cloudflare Images"
     )
 
     caption = models.CharField(max_length=255, blank=True)
@@ -73,7 +74,7 @@ class RidePhoto(TrackedModel):
         related_name="uploaded_ride_photos",
     )
 
-    class Meta:
+    class Meta(TrackedModel.Meta):
         app_label = "rides"
         ordering = ["-is_primary", "-created_at"]
         indexes = [