Add morning.photos to showcase (gatsbyjs#12840)

Author: sapegin

docs/sites.yml

@@ -5101,3 +5101,15 @@
   built_by: Jacob Herper
   built_by_url: https://github.com/jakeherp
   featured: false
+- title: Artem Sapegin Photography
+  description: >
+    Photography portfolio and blog of Artem Sapegin, an award-losing photographer living in Berlin, Germany. Landscapes, cityscapes and dogs.
+  main_url: "https://morning.photos/"
+  url: "https://morning.photos/"
+  source_url: "https://github.com/sapegin/morning.photos"
+  categories:
+    - Portfolio
+    - Photography
+  built_by: Artem Sapegin
+  built_by_url: "https://github.com/sapegin"
+  featured: false