avfilter: add shuffleframes filter

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/allfilters.c

@@ -236,6 +236,7 @@ void avfilter_register_all(void)
     REGISTER_FILTER(SETTB,          settb,          vf);
     REGISTER_FILTER(SHOWINFO,       showinfo,       vf);
     REGISTER_FILTER(SHOWPALETTE,    showpalette,    vf);
+    REGISTER_FILTER(SHUFFLEFRAMES,  shuffleframes,  vf);
     REGISTER_FILTER(SHUFFLEPLANES,  shuffleplanes,  vf);
     REGISTER_FILTER(SIGNALSTATS,    signalstats,    vf);
     REGISTER_FILTER(SMARTBLUR,      smartblur,      vf);