Add Koustav portfolio website JSON configuration

domains/koustavk.json

@@ -0,0 +1,11 @@
+{
+  "description": "Koustav portfolio website",
+  "repo": "https://github.com/Koustav-KK/my_portfolio",
+  "owner": {
+    "username": "Koustav-KK",
+    "email": "koustavscience29@gmail.com"
+  },
+  "record": {
+    "CNAME": "portfolio-489-1.web.app"
+  }
+}