Add detailed wiki examples on formatting various file formats

[goxr3plus]

Currently we have examples on how to use the library but i think they are not enough.

We should add 4 sections .

1. Converting Video to Audio examples ( .mp4 -> .mp3 , ....)

2. Converting Audio to Video (.flac -> .mp4 (no image only audio etc))

3. Combining multiple audio files to one ( 1.mp3 + 2.mp3 ...)

4. Combining multiple video files to one (1.mp4 + 2.mp4...)

For that i will need your help , because i have not that deep knowledge on how to do 2 , 3 , 4.

@a-schild

[goxr3plus]

https://www.sauronsoftware.it/projects/jave/manual.php Has some samples but not enough at all for new library users .

[mressler]

I'm taking a pass at making bullet 4 easier to do. If we like the direction I can keep it going and add some documentation.

[goxr3plus]

Thank you please do :)

[mressler]

@goxr3plus Can you provide an example for bullet 1? My pass at bullet 4 is in the VideoFilterTest. Should be easy enough to add to a documentation section - want to collaborate on some documentation changes?