Add attributions for demo files

ATTRIBUTIONS.md

@@ -4,6 +4,34 @@
 
 - App logo: [cook.svg](https://www.dropbox.com/s/ieul67s2keh5r7r/cook.svg?raw=1) by [Logodust](https://logodust.com/) 
 
+## [Unsplash license](https://unsplash.com/license) (demo photos)
+
+- `public/media/1/1.jpg`: Photo by <a href="https://unsplash.com/@therachelstory?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Rachel Park</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/2/2.jpg`: Photo by <a href="https://unsplash.com/@lvnatikk?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Lily Banse</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/3/3.jpg`: Photo by <a href="https://unsplash.com/@miracletwentyone?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Joseph Gonzalez</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/4/4.jpg`: Photo by <a href="https://unsplash.com/@miracletwentyone?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Joseph Gonzalez</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/5/5.jpg`: Photo by <a href="https://unsplash.com/@visuallert?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Jonas Allert</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/6/6.jpg`: Photo by <a href="https://unsplash.com/@grimnoire?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">emy</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/7/7.jpg`: Photo by <a href="https://unsplash.com/@emilianovittoriosi?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Emiliano Vittoriosi</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/8/8.jpg`: Photo by <a href="https://unsplash.com/@shootdelicious?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Eiliv-Sonas Aceron</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/9/9.jpg`: Photo by <a href="https://unsplash.com/@edgarraw?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Edgar Castrejon</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/10/10.jpg`: Photo by <a href="https://unsplash.com/@eaterscollective?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Eaters Collective</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/11/11.jpg`: Photo by <a href="https://unsplash.com/@cant89?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Davide Cantelli</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/12/12.jpg`: Photo by <a href="https://unsplash.com/@simplethemes?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Casey Lee</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/13/13.jpg`: Photo by <a href="https://unsplash.com/@calajay?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Cala</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/14/14.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/15/15.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/16/16.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/17/17.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/18/18.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/19/19.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/20/20.jpg`: Photo by <a href="https://unsplash.com/@brookelark?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Brooke Lark</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/21/21.jpg`: Photo by <a href="https://unsplash.com/@anniespratt?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Annie Spratt</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/22/22.jpg`: Photo by <a href="https://unsplash.com/@anna_tukhfatullina?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Anna Tukhfatullina Food Photographer/Stylist</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/23/23.jpg`: Photo by <a href="https://unsplash.com/@annapelzer?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Anna Pelzer</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/24/24.jpg`: Photo by <a href="https://unsplash.com/@alexmunsell?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Alex Munsell</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+- `public/media/25/25.jpg`: Photo by <a href="https://unsplash.com/@alexmunsell?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Alex Munsell</a> on <a href="https://unsplash.com/images/food?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>
+
 ## Everything else
 
 All other icons [MIT](https://github.com/tailwindlabs/heroicons/blob/master/LICENSE) licensed from [heroicons](https://heroicons.com/).