Refactor files based on beta debug build (#645)

* Rename LegoUnkSaveDataWriter -> LegoCharacterManager

* Refactor mxomni into mxomni/mxmisc

* Refactor legoomni into legoomni/misc

* Resolve deps

* Refactor atom

* Refactor mxutil

* Refactor mxio

* Rename/relocate files

* Fix format

LEGO1/lego/legoomni/src/actors/racecar.cpp

@@ -0,0 +1,33 @@
+#include "racecar.h"
+
+#include "legocontrolmanager.h"
+#include "misc.h"
+
+DECOMP_SIZE_ASSERT(RaceCar, 0x164);
+
+// FUNCTION: LEGO1 0x10028200
+RaceCar::RaceCar()
+{
+	m_unk0x13c = 40.0;
+}
+
+// FUNCTION: LEGO1 0x10028420
+RaceCar::~RaceCar()
+{
+	ControlManager()->Unregister(this);
+	VTable0xe4();
+}
+
+// STUB: LEGO1 0x10028490
+MxResult RaceCar::Create(MxDSAction& p_dsAction)
+{
+	// TODO
+	return SUCCESS;
+}
+
+// STUB: LEGO1 0x100284d0
+MxU32 RaceCar::VTable0xcc()
+{
+	// TODO
+	return 0;
+}