laravel 11 support (#3)

Feature: Process Twilio Programmable Messaging webhooks (#2)

* replace mentions of Mailgun with Twilio

* convert  to an array and check for both CallStatus and SmsStatus to allow for Programmable Messaging webhooks

* add Programmable Messaging (Outbound) Webhook Event Types section to readme

* fix webhook validation by removing query parameters in callback url from request data

* update readme to include information about passing metadata in callback url

* update readme to include note about alphabetizing url parameters in statusCallback URLs to avoid verification failures

* readme typo

* restore $key and adjust setter

* create two new tests to confirm CallStatus or SmsStatus

Merge pull request #1 from binary-cats/patch-1-laravel-10

- Updated phpunit schema - Updated dependencies to allow Laravel 10

Initial commit