restore ncvisual_inflate(), for now

src/lib/visual.c

@@ -1302,3 +1302,10 @@ bool notcurses_canopen_videos(const notcurses* nc __attribute__ ((unused))){
   }
   return visual_implementation.canopen_videos;
 }
+
+int ncvisual_inflate(ncvisual* n, int scale){
+  if(scale <= 0){
+    return -1;
+  }
+  return ncvisual_resize_noninterpolative(n, n->pixy * scale, n->pixx * scale);
+}