Support LTI 1 launch urls with new library

On a Moodle 3.1+ site (SITE A) Enable the LTI authentication plugin. (Site administration ► Plugins ► Authentication ► Manage authentication) Then go to Site administration ► Plugins ► Enrolments ► Manage enrol plugins and enable Publish as LTI tool Create a course and add an activity (e.g. a Page resource). Under Course administration, click Enrolment methods Under Add a method select Publish as LTI tool . Enter a Custom instance name Under Tool to be published select Course Click Add method . Under Course administration, click Published as LTI tools . Take note of the cartridge (or tool) URL and secret to be used later. On another Moodle 3.1+ site (SITE B) Log in as admin. Create a course and enrol some students. Add an external tool activity. Enter a name for the activity. Enter cartridge/tool URL from SITE A into the Launch/cartridge URL field. Click Show more to expand the form. Enter any non-empty string value for the Consumer key . Enter the secret from SITE A into the Shared secret field. Click Save and return to course . Login as a student enrolled to the course and open the LTI tool. Confirm that it launches normally.