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

src/d/d_kankyo.cpp

@@ -1,8 +1,12 @@
 #include "d/dolzel.h" // IWYU pragma: keep
 
 #include "d/d_kankyo.h"
-#include <dolphin/dolphin.h>
-#include <dolphin/gf/GFPixel.h>
+#ifdef __REVOLUTION_SDK__
+#include <revolution.h>
+#else
+#include <dolphin.h>
+#endif
+#include <gf/GFPixel.h>
 
 #include "JSystem/JHostIO/JORFile.h"
 #include "JSystem/JHostIO/JORServer.h"