Add shk.json for domain configuration

domains/shk.json

@@ -0,0 +1,10 @@
+{
+  "description": "SHk backend dev portfolio website",
+  "owner": {
+    "username": "S-Hk",
+    "email": "38405687+S-Hk@users.noreply.github.com"
+  },
+  "record": {
+    "CNAME": "s-hk.github.io"
+  }
+}