Replacement Handle & Lock for Alside Series 6402/6405/6406/6408 Sliding Door

I have a sliding glass door in my basement that locks only from the inside. It's a simple locking mechanism which flips up and down to lock and unlock the door. The outside has only a handle to pull the door open and closed. I'd like to replace the lock with standard lock core so I can access the basement with a key from the outside. I anticipate having to replace the handle as well. I took a picture of the AAMA certification label on the inside of the door and it identified the door as an Alside Series 6402/6405/6406/6408 French SGD. What hardware would you recommend for this? Thank you.