Allow players to toggle between Vulkan and OpenGL

Dear Mojang

I heard you're going to switch render engine to Vulkan, that's a wonderful thing to hear, i know your purpose is to make as many device compatible as possible but there's still an issue, there's still players still play minecraft with older hardware (10+ years old hardware), and that would prevent them from playing their own favourite game, and both of us don't want that happened i believe

Solution: from what i'm thinking, the better way is add a setting in launcher that let players choose which render engine to launch the game instead of remove OpenGL, that would increase compatible range for older hardware, this is way better than forced upgrade their hardware because right now, RAM and GPU pricing are still increasing so it's not a good time.

Finally, i hope you will agree with my solution, which is the best i could make it out, i'm very excited to see your plan in the next update.

As for the players, if anyone know better solution than this, just comment below, i'm interesting to see