Add kutils.json with project metadata

Added metadata for K-Utils project including description, repository link, owner information, and CNAME record.

domains/kutils.json

@@ -0,0 +1,12 @@
+{
+  "description": "K-Utils: A collection of open-source developer utilities and secure text tools.",
+  "repo": "https://github.com/tranhuykhang31032013-koocbiet/kutils-web",
+  "owner": {
+    "username": "tranhuykhang31032013-koocbiet",
+    "email": "tranhuykhang31032013@gmail.com"
+  },
+  "records": {
+    "CNAME": "tranhuykhang31032013-koocbiet.github.io"
+  }
+}
+