Add funding to package.json

Author: rubensworks

package.json

@@ -13,6 +13,10 @@
   "typings": "index",
   "repository": "[email protected]:rubensworks/rdf-test-suite.js.git",
   "author": "Ruben Taelman <[email protected]>",
+  "funding": {
+    "type": "individual",
+    "url": "https://github.com/sponsors/rubensworks/"
+  },
   "bugs": {
     "url": "https://github.com/rubensworks/rdf-test-suite.js/issues"
   },