You are asking is something from Dragon Age, is real.
The simple answer for that is no, there is no Elven Pantheon or Elven gods.
As far as I am aware there is no pantheon of gods that are specifically denoted as being Elven, however, there are many cultures and mythologies that involve Elves and Elf like beings.
You should look into the Norse Ljosalfar.
No elven pantheon exists, but in the norse pantheon, we have what is called the alfar. Or elves. The god Freyr is seen as their monarch of Alfheim.