feat: FPS Limiter (#1446)

* Add interpolation frame rate cap

* wip: reworked framelimiter

Based on my testing this is a bit more stable in frametimes.

* wip: efficiency improvement + windows build fix

Significantly improve efficiency by using a hybrid approach.

* wip: UI changes

* wip: end frame AFTER limiting

* wip: remove unused include

* wip: minor ui code change

Makes it easier to remove/add presets

* Simplify Limiter UI

- Change enableFrameInterpolation to an enum with off/capped/unlimited values
- Simplify the UI to use 2 settings (unlock framerate + a max value entry)

* wip: slight limiter simplification

* wip: implement review suggestions

* wip: fix syntax error

* wip: revert enum order + replace old checks

* Fix compile error

---------

Co-authored-by: SailorSnoW <sailorsnow@pm.me>
Co-authored-by: Loïs <49660929+SailorSnoW@users.noreply.github.com>
Co-authored-by: SuperDude88 <82904174+SuperDude88@users.noreply.github.com>
Co-authored-by: Luke Street <luke@street.dev>

include/dusk/settings.h

@@ -34,6 +34,12 @@ enum class GyroMode : u8 {
     Mouse = 1,
 };
 
+enum class FrameInterpMode : u8 {
+    Off = 0,
+    Capped = 1,
+    Unlimited = 2,
+};
+
 namespace config {
 template <>
 struct ConfigEnumRange<BloomMode> {
@@ -58,7 +64,13 @@ struct ConfigEnumRange<GyroMode> {
     static constexpr auto min = GyroMode::Sensor;
     static constexpr auto max = GyroMode::Mouse;
 };
-}
+
+template <>
+struct ConfigEnumRange<FrameInterpMode> {
+    static constexpr auto min = FrameInterpMode::Off;
+    static constexpr auto max = FrameInterpMode::Unlimited;
+};
+}  // namespace config
 
 // Persistent user settings
 
@@ -72,6 +84,7 @@ struct UserSettings {
         ConfigVar<bool> lockAspectRatio;
         ConfigVar<bool> enableFpsOverlay;
         ConfigVar<int> fpsOverlayCorner;
+        ConfigVar<int> maxFrameRate;
     } video;
 
     struct {
@@ -124,7 +137,7 @@ struct UserSettings {
         ConfigVar<float> bloomMultiplier;
         ConfigVar<bool> disableWaterRefraction;
         ConfigVar<bool> enableTextureReplacements;
-        ConfigVar<bool> enableFrameInterpolation;
+        ConfigVar<FrameInterpMode> enableFrameInterpolation;
         ConfigVar<int> internalResolutionScale;
         ConfigVar<int> shadowResolutionMultiplier;
         ConfigVar<bool> enableDepthOfField;