Initial commit for Toxic, a new curses interface for Tox.

Still a work-in-progress.

windows.h

@@ -0,0 +1,10 @@
+typedef struct ToxWindow_ ToxWindow;
+
+struct ToxWindow_ {
+  void(*onKey)(ToxWindow*, int);
+  void(*onDraw)(ToxWindow*);
+  void(*onInit)(ToxWindow*);
+  char title[256];
+
+  WINDOW* window;
+};