Mark xelib as conflicting (DefinitelyTyped#73449)

Author: jakebailey

types/xelib/package.json

@@ -2,7 +2,7 @@
     "private": true,
     "name": "@types/xelib",
     "version": "0.6.9999",
-    "nonNpm": true,
+    "nonNpm": "conflict",
     "nonNpmDescription": "xelib",
     "projects": [
         "https://github.com/z-edit/xelib"