(Refactor) Use more forward declarations (#881)

* Use more forward declarations

* Use more forward declarations

* Add more forward declarations

* Fix

LEGO1/lego/sources/3dmanager/lego3dmanager.cpp

@@ -4,6 +4,7 @@
 
 #include "decomp.h"
 #include "viewmanager/viewlodlist.h"
+#include "viewmanager/viewmanager.h"
 
 DECOMP_SIZE_ASSERT(Lego3DManager, 0x10);
 

LEGO1/lego/sources/3dmanager/lego3dview.h

@@ -3,7 +3,9 @@
 
 #include "decomp.h"
 #include "legoview1.h"
-#include "viewmanager/viewmanager.h"
+
+class ViewManager;
+class ViewROI;
 
 /////////////////////////////////////////////////////////////////////////////
 // Lego3DView

LEGO1/lego/sources/anim/legoanim.h

@@ -4,7 +4,8 @@
 #include "decomp.h"
 #include "misc/legostorage.h"
 #include "misc/legotree.h"
-#include "realtime/matrix.h"
+
+class Matrix4;
 
 // SIZE 0x08
 class LegoAnimKey {

LEGO1/lego/sources/geom/legoedge.h

@@ -2,9 +2,9 @@
 #define __LEGOEDGE_H
 
 #include "misc/legotypes.h"
-#include "realtime/vector.h"
 
 class LegoWEEdge;
+class Vector3;
 
 // VTABLE: LEGO1 0x100db7b8
 // SIZE 0x24

LEGO1/lego/sources/misc/legocontainer.cpp

@@ -2,6 +2,7 @@
 
 #include "lego/legoomni/include/legovideomanager.h"
 #include "lego/legoomni/include/misc.h"
+#include "mxdirectx/mxdirect3d.h"
 #include "tgl/d3drm/impl.h"
 
 DECOMP_SIZE_ASSERT(LegoContainerInfo<LegoTexture>, 0x10);

LEGO1/lego/sources/misc/legounknown.h

@@ -3,7 +3,8 @@
 
 #include "legotypes.h"
 #include "mxgeometry/mxgeometry3d.h"
-#include "mxgeometry/mxmatrix.h"
+
+class Matrix4;
 
 // SIZE 0x50
 class LegoUnknown {