[debug] added functions to enable access to debug knobs from kotlin side + docs (#3265)

Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3265
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: xbzk <xbzk@eden-emu.dev>
Co-committed-by: xbzk <xbzk@eden-emu.dev>

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -200,6 +200,8 @@ object NativeLibrary {
 
     external fun logSettings()
 
+    external fun getDebugKnobAt(index: Int): Boolean
+
     /**
      * Returns Vulkan driver version / API version / GPU model
      */

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/Settings.kt

@@ -34,6 +34,10 @@ object Settings {
     fun getPlayerString(player: Int): String =
         YuzuApplication.appContext.getString(R.string.preferences_player, player)
 
+    fun getDebugKnobAt(index: Int): Boolean {
+        return org.yuzu.yuzu_emu.NativeLibrary.getDebugKnobAt(index)
+    }
+
     const val PREF_FIRST_APP_LAUNCH = "FirstApplicationLaunch"
     const val PREF_SHOULD_SHOW_DRIVER_WARNING = "ShouldShowDriverWarning"
     const val PREF_MEMORY_WARNING_SHOWN = "MemoryWarningShown"

src/android/app/src/main/jni/native.cpp

@@ -1130,6 +1130,10 @@ void Java_org_yuzu_yuzu_1emu_NativeLibrary_logSettings(JNIEnv* env, jobject jobj
     Settings::LogSettings();
 }
 
+jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_getDebugKnobAt(JNIEnv* env, jobject jobj, jint index) {
+    return static_cast<jboolean>(Settings::getDebugKnobAt(static_cast<u8>(index)));
+}
+
 void Java_org_yuzu_yuzu_1emu_NativeLibrary_run(JNIEnv* env, jobject jobj, jstring j_path,
                                                jint j_program_index,
                                                jboolean j_frontend_initiated) {