Added configuration options to support LDAPS.

[HSAR]

Description

Provides a through route for configuring a certificate and key to the ldapjs server that allows the use of the SSL-enabled ldaps:// protocol for applications that require this capability.

Testing

Provide a PEM-encoded certificate and key. Server starts and authenticates over LDAPS if correct. It would be extraordinarily difficult to provide automated test coverage for this feature.

Checklist

• [x] I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• [x] All active GitHub checks for tests, formatting, and security are passing
• [x] The correct base branch is being used, if not master