Z2AudioLib: split (#64)

* Z2AudioLib: split

- Z2SpeechMgr2
- Z2Audience
- Z2EnvSeMgr
- Z2SoundMgr
- Z2AudioMgr
- Z2Creature
- Z2SoundStarter
- Z2WolfHowlMgr
- Z2SoundObject
- Z2SoundObjMgr
- Z2SoundInfo
- Z2AudioArcLoader
- Z2AudioLib
- Z2SoundHandles
- Z2LinkMgr: finish splitting
- Z2SceneMgr: finish splitting
- Z2SeqMgr: finish splitting

* merge fix

Co-authored-by: Pheenoh <pheenoh@gmail.com>

include/Z2AudioLib/Z2SoundMgr/Z2SoundMgr.h

@@ -0,0 +1,10 @@
+#ifndef __Z2SOUNDMGR_H__
+#define __Z2SOUNDMGR_H__
+
+class Z2SoundMgr;
+
+extern "C" {
+void Z2SoundMgr_NS_pauseAllGameSound(Z2SoundMgr* p0, bool p1);
+};
+
+#endif