Any way to get it or is there any plan to add this feature soon?
There is no API for getting terrain data at this time. As has been mentioned in a few dev Q&As, it is under consideration but has some non-technical hurdles regarding the data and thus is not specifically on the roadmap at this time.
Ok so I understand this is a licensing issue probably.
I hope we can have it with MSFS 2024 as well as the obstacle database.