interface update

reviewed at: https://rbcommons.com/s/OpenH264/r/635/

1. add iComplexityMode to set encoder complexity flexibly by app.
2. remove uiFrameToBeCoded which isn't used in encoder core
3. remove iInputCsp because encoder only supports I420, and this parameter means output setting
4. astyle files.  this is very strange that there are some files changed when astyle them