add actions forward decl header (#699)

* add actions forward decl header

* newline

* format

* remove existing fwd declares

* Headers

* replace COMPAT_MODE check

* flip

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/lego/legoomni/include/legoanimationmanager.h

@@ -1,6 +1,7 @@
 #ifndef LEGOANIMATIONMANAGER_H
 #define LEGOANIMATIONMANAGER_H
 
+#include "actionsfwd.h"
 #include "animstate.h"
 #include "decomp.h"
 #include "legotraninfolist.h"
@@ -13,15 +14,6 @@ struct Character {
 	MxBool m_active;           // 0x14
 };
 
-namespace IsleScript
-{
-#ifdef COMPAT_MODE
-enum Script : int;
-#else
-enum Script;
-#endif
-} // namespace IsleScript
-
 // VTABLE: LEGO1 0x100d8c18
 // SIZE 0x500
 class LegoAnimationManager : public MxCore {