Reorganize library code into libs/ (#3119)

* Reorganize files into libs/{dolphin,JSystem,PowerPC_EABI_Support,revolution,TRK_MINNOW_DOLPHIN}

* Update configure.py and project.py for new libs structure

* Refactor `#include <dolphin/x.h>` -> `<x.h>`

* Remove `__REVOLUTION_SDK__` forwards from dolphin

* Fix dolphin/ references in revolution

* Wrap `#include <dolphin.h>` in `!__REVOLUTION_SDK__`

* Always build TRK against dolphin headers

* Resolve revolution SDK header resolution issues

libs/JSystem/src/JAudio2/JASLfo.cpp

@@ -0,0 +1,55 @@
+#include "JSystem/JSystem.h" // IWYU pragma: keep
+
+#include "JSystem/JAudio2/JASLfo.h"
+#include "SSystem/SComponent/c_math.h"
+
+
+JASLfo::JASLfo() {
+    field_0x0 = 0;
+    field_0x4 = 1;
+    field_0x8 = 0.0f;
+    mDepth = 0.0f;
+    mPitch = 1.0f;
+    mDelay = 0;
+    field_0x16 = 0;
+}
+
+
+f32 JASLfo::getValue() const {
+    if (field_0x16) {
+        return 0.0f;
+    }
+
+    if (mDepth == 0.0f) {
+        return 0.0f;
+    }
+
+    return mDepth * JMASinLap(field_0x8);
+}
+
+
+void JASLfo::incCounter(f32 param_0) {
+    if (field_0x16) {
+        field_0x16--;
+        return;
+    }
+
+    field_0x8 += param_0 * ((1.0f / 72.0f) * mPitch);
+    if (field_0x8 >= 1.0f) {
+        field_0x8 -= 1.0f; 
+    }
+}
+
+JASLfo JASLfo::sFreeRunLfo;
+
+void JASLfo::resetCounter() {
+    field_0x16 = mDelay;
+    switch (field_0x4) {
+    case 0:
+        field_0x8 = sFreeRunLfo.field_0x8;
+        break;
+    case 1:
+        field_0x8 = 0.0f;
+        break;
+    }
+}