Option to disable Vsync

[fan87]

Is your feature request related to a problem? Please describe.
The input latency is too high to be competitive in PvP, also the FPS is locked

Describe the solution you'd like
An option that hooks into eglSwapInterval (fake_egl.cpp), I did clone this repository and force it always be 0, and the problem was solved, probably configured in mcpelauncher-client-settings.txt

Describe alternatives you've considered
Making changes to the code

[ChristopherHX]

options.txt of the game also allows to control vsync, so I didn't have the need myself to add anything for it in the launcher

[fan87]

Wow, I never knew that MCPE has options.txt, thanks

[lucasmz-dev]

I think this would definitely be a nice feature to add as a lot of people probably don't know about this, I certainly didn't for a long while, and it does make a big difference in input lag, makes it kind of look like Java in ways.