Require serpapi php package

Author: drewroberts

composer.json

@@ -17,6 +17,7 @@
     "require": {
         "php": "^7.4|^8.0",
         "google/apiclient": "^2.7",
+        "serpapi/google-search-results-php": "^2.0",
         "tipoff/authorization": "^1.0.1",
         "tipoff/support": "^1.4.3"
     },