search: Fix to move search position in forward search

Previously, if the searched word was located position 0, then the first
search worked but the next search did not work. Because the search
position was still 0.

Now, the search position moves to the end of the searched word if the
search type is forward.

src/bin/search.c

@@ -107,6 +107,11 @@ selection_region_anim_cb(void *data)
    search_data *sd = data;
    enventor_item_select_region_set(sd->it, sd->pos,
                                    (sd->pos + sd->len));
+
+   //Move search position to the end of the word if search type is forward
+   if (sd->forward)
+     sd->pos += sd->len;
+
    return ECORE_CALLBACK_CANCEL;
 }