Add vertex rounding to game INIs for certain titles

https://bugs.dolphin-emu.org/issues/10186

Data/Sys/GameSettings/GNI.ini

@@ -0,0 +1,16 @@
+# GNIEA4, GNIPA4 - Teenage Mutant Ninja Turtles 2: Battle Nexus
+
+[Core]
+# Values set here will override the main Dolphin settings.
+
+[OnLoad]
+# Add memory patches to be loaded once on boot here.
+
+[OnFrame]
+# Add memory patches to be applied every frame here.
+
+[ActionReplay]
+# Add action replay cheats here.
+
+[Video_Hacks]
+ImmediateXFBEnable = False