gitadora: option to disable frame limiter (#848)

## Link to GitHub Issue or related Pull Request, if one exists
n/a

## Description of change
There is a patch for GITADORA series that fixes frame pacing on modern
Windows. Turn it into a signature patch and embed it into the game.

## Testing
should work for all 64-bit gitadora versions, pre-GWD

src/spice2x/launcher/options.cpp

@@ -1202,6 +1202,19 @@ static const std::vector<OptionDefinition> OPTION_DEFINITIONS = {
         .category = "Game Options",
         .quick_setting_category = "Game",
     },
+    {
+        .title = "GitaDora Disable Frame Limiter (EXPERIMENTAL)",
+        .name = "gdnoframelimiter",
+        .desc = "Only for GITADORA to GALAXY WAVE; not for XG series or Arena Model.\n\n"
+            "Game engine's built-in frame limiter can result in unstable frame pacing "
+            "(around 56-58 FPS) on modern Windows. Turning this on disables that and "
+            "forces the game to rely on V-Sync instead, resulting in a stable FPS.\n\n"
+            "Ensure your monitors are set to 60Hz.",
+        .type = OptionType::Bool,
+        .game_name = "GitaDora",
+        .category = "Game Options",
+        .quick_setting_category = "Game",
+    },
     {
         .title = "GitaDora Cabinet Type",
         .name = "gdcabtype",