lego: implement SetControlMax and related partials (MxVideoManager, MxPalette, MxUnknown100dc6b0) (#42)

* lego: implement LegoNavController::SetControlMax and related

* use MxResult

* fix name

LEGO1/mxpalette.cpp

@@ -0,0 +1,8 @@
+#include "mxpalette.h"
+
+// OFFSET: LEGO1 0x100bf150
+MxResult MxPalette::GetEntries(LPPALETTEENTRY p_entries)
+{
+  memcpy(p_entries, this->m_entries, sizeof(this->m_entries));
+  return SUCCESS;
+}