BuildSystem: Move all userpace libraries under the userspace directory

As the number of libraries is increasing, root directory starts to
expand. This adds better organization for libraries

userspace/libraries/LibC/include/sys/framebuffer.h

@@ -0,0 +1,20 @@
+#ifndef _FRAMEBUFFER_H
+#define _FRAMEBUFFER_H 1
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#include <stdint.h>
+
+#define BANAN_FB_BPP 32
+
+struct framebuffer_info_t
+{
+	uint32_t width;
+	uint32_t height;
+};
+
+__END_DECLS
+
+#endif