media-libs/vapoursynth: Enable Inverse Telecine and Decimation plugin
Warnings
Warning: USE flag 'vapoursynth_plugins_vivtc' is used in ebuilds/metadata but is not defined in profiles/use.desc
Warning: USE flag 'vapoursynth_plugins_vivtc' used by media-plugins/vapoursynth-plugins-meta but has no description in metadata.xml, use.local.desc or use.desc