feat: remove frame generation options from all platforms

Frame generation was marked as WIP and not ready for production use.
This commit removes all frame generation related code and UI elements
to prevent users from enabling an incomplete feature.

Changes:
- Remove frame generation settings from Android UI (Kotlin/XML)
- Remove frame generation settings from Desktop UI (Qt/C++)
- Remove frame generation enums and settings from core (C++)
- Remove frame generation Vulkan renderer implementation
- Remove frame generation shader files
- Update CMake build configuration

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/citron/configuration/shared_translation.cpp

@@ -129,10 +129,7 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QWidget* parent) {
            tr("Determines how sharpened the image will look while using FSR's dynamic contrast."));
     INSERT(Settings, fsr2_quality_mode, tr("FSR 2.0 Quality Mode:"),
            tr("Selects the quality mode for FSR 2.0 upscaling. Quality provides better image quality, Performance provides better performance."));
-    INSERT(Settings, frame_generation, tr("Frame Generation:"),
-           tr("Enables frame generation to create intermediate frames, potentially doubling the perceived frame rate."));
-               INSERT(Settings, frame_generation_mode, tr("Frame Generation Mode:"),
-                  tr("Interpolation creates frames between existing ones, while Extrapolation predicts future frames."));
+
            INSERT(Settings, frame_skipping, tr("Frame Skipping:"),
                   tr("Skips frames to maintain performance when the system cannot keep up with the target frame rate."));
            INSERT(Settings, frame_skipping_mode, tr("Frame Skipping Mode:"),
@@ -419,16 +416,7 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QWidget* parent) {
                               PAIR(FSR2QualityMode, Performance, tr("Performance")),
                               PAIR(FSR2QualityMode, UltraPerformance, tr("Ultra Performance")),
                           }});
-    translations->insert({Settings::EnumMetadata<Settings::FrameGeneration>::Index(),
-                          {
-                              PAIR(FrameGeneration, Disabled, tr("Disabled")),
-                              PAIR(FrameGeneration, Enabled, tr("Enabled")),
-                          }});
-               translations->insert({Settings::EnumMetadata<Settings::FrameGenerationMode>::Index(),
-                                 {
-                                     PAIR(FrameGenerationMode, Interpolation, tr("Interpolation")),
-                                     PAIR(FrameGenerationMode, Extrapolation, tr("Extrapolation")),
-                                 }});
+
            translations->insert({Settings::EnumMetadata<Settings::FrameSkipping>::Index(),
                                  {
                                      PAIR(FrameSkipping, Disabled, tr("Disabled")),