* Create CITATION.cff

@AyushExel @pderrenger new citation file!! :)
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update CITATION.cff
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>