LibDraw: Introduce (formerly known as SharedGraphics.)

Instead of LibGUI and WindowServer building their own copies of the drawing
and graphics code, let's it in a separate LibDraw library.

This avoids building the code twice, and will encourage better separation
of concerns. :^)

DevTools/VisualBuilder/Makefile

@@ -16,7 +16,7 @@ DEFINES += -DUSERLAND
 all: $(APP)
 
 $(APP): $(OBJS)
-	$(LD) -o $(APP) $(LDFLAGS) $(OBJS) -lgui -lcore -lc
+	$(LD) -o $(APP) $(LDFLAGS) $(OBJS) -lgui -ldraw -lcore -lc
 
 .cpp.o:
 	@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<

DevTools/VisualBuilder/VBWidget.h

@@ -6,7 +6,7 @@
 #include <AK/RefCounted.h>
 #include <AK/NonnullRefPtr.h>
 #include <AK/Weakable.h>
-#include <SharedGraphics/Rect.h>
+#include <LibDraw/Rect.h>
 
 class GPainter;
 class GVariant;

DevTools/VisualBuilder/VBWidgetPropertyModel.cpp

@@ -1,7 +1,7 @@
 #include "VBWidgetPropertyModel.h"
 #include "VBProperty.h"
 #include "VBWidget.h"
-#include <SharedGraphics/Font.h>
+#include <LibDraw/Font.h>
 
 VBWidgetPropertyModel::VBWidgetPropertyModel(VBWidget& widget)
     : m_widget(widget)