Add option to turn off MSAA antialiasing because it has big fps drop

[acyc070]

No description provided.

[Kneesnap]

Anti-aliasing is not enabled in current dev builds of FrogLord, and had only been enabled in previous dev builds of FrogLord for testing purposes. However, I'll consider adding a settings menu with the ability to enable/disable it.

[acyc070]

i checked "master", it branch still uses MSAA

[acyc070]

it has around 30-60 fps

[Kneesnap]

master does not always reflect the state of FrogLord, as often changes are made on other branches (sometimes taking months at a time) before they get merged into master.