Add request recipe name@version to email subject.

softpack_core/service.py

@@ -189,7 +189,7 @@ async def request_recipe(  # type: ignore[no-untyped-def]
                 + f'URL: {data["url"]}\n'
                 + f'Description: {data["description"]}'
             )
-            msg["Subject"] = "SoftPack Recipe Request"
+            msg["Subject"] = f'SoftPack Recipe Request: {data["name"]}@{data["version"]}'
             msg["From"] = recipeConfig["fromAddr"]
             msg["To"] = recipeConfig["toAddr"]