[BD-24][TNL-7647] BB-3128: Score linking ADR (#114)
[BD-24][TNL-7647] BB-3128: Score linking ADR (#114)

* Write score linking ADR

* Formatting fixes

* Nit

* Addressing review comments

* Final implementation

* Nit

* Updating ADR given discussions
edx/xblock-lti-consumer,edx/xblock-lti-consumer,edx/xblock-lti-consumer,edx/xblock-lti-consumer