Basic Atrac3 Support in sceAtrac using ffmpeg

It is a consolidated version of sceAtrac based on current one and oioitff code to provide basic support of atrac3 audio using ffmpeg library (Note : no atrac3+ and directshow support removed)

It still compiled okay in master and atrac3 audio should start working once other developer commited the windows/android static library linking like #1641


Referencing #1662