Normalize recipe instructions, yield, and image url

Including tests and example recipe data.

dev/scripts/scrape_recipe.py

@@ -0,0 +1,18 @@
+"""
+Helper script to download raw recipe data from a URL and dump it to disk.
+The resulting files can be used as test input data.
+"""
+
+import sys, json
+from scrape_schema_recipe import scrape_url
+
+for url in sys.argv[1:]:
+    try:
+        data = scrape_url(url)[0]
+        slug = list(filter(None, url.split("/")))[-1]
+        filename = f"{slug}.json"
+        with open(filename, "w") as f:
+            json.dump(data, f, indent=4, default=str)
+        print(f"Saved {filename}")
+    except Exception as e:
+        print(f"Error for {url}: {e}")