Add github pages domain

domains/kyoya.is-a.dev

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "kyoyacchi",
+    "email": "kyoyacchi@protonmail.ch",
+  },
+  "record": {
+    "CNAME": "kyoyacchi.github.io"
+  }
+}