Add author to package.json

Author: bartveneman

package.json

@@ -9,6 +9,7 @@
   "homepage": "https://github.com/projectwallace/format-css",
   "issues": "https://github.com/projectwallace/format-css/issues",
   "license": "MIT",
+  "author": "Bart Veneman <bart@projectwallace.com>",
   "engines": {
     "node": ">=18.0.0"
   },
@@ -57,4 +58,4 @@
     "printWidth": 140,
     "singleQuote": true
   }
-}
+}