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. :^)

Userland/Makefile

@@ -19,7 +19,7 @@ clean:
 
 $(APPS) : % : %.o $(OBJS)
 	@echo "LD $@"
-	@$(LD) -o $@ $(LDFLAGS) $< -lc -lgui -laudio -lcore
+	@$(LD) -o $@ $(LDFLAGS) $< -lc -lgui -ldraw -laudio -lcore
 
 %.o: %.cpp
 	@echo "CXX $<"

Userland/guitest2.cpp

@@ -9,7 +9,7 @@
 #include <LibGUI/GTextBox.h>
 #include <LibGUI/GWidget.h>
 #include <LibGUI/GWindow.h>
-#include <SharedGraphics/GraphicsBitmap.h>
+#include <LibDraw/GraphicsBitmap.h>
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>