feat: Add google authentication package, cleanup old code (#7496)

packages/modules/providers/auth-google/src/index.ts

@@ -0,0 +1,10 @@
+import { ModuleProviderExports } from "@medusajs/types"
+import { GoogleAuthService } from "./services/google"
+
+const services = [GoogleAuthService]
+
+const providerExport: ModuleProviderExports = {
+  services,
+}
+
+export default providerExport