Provide PTL information to API

[Former user]

Respectfully request additional information to be exposed to the API for reference. I'm particularly interested in the tier and level since they can be different than what is specified in the x265_param structure. This information is in the encoder.vps which I don't think is accessible via the API. Bitrate, CPB size/rate too.

I'm looking to programmatically confirm intended settings as well as inspect for when parameters are set to ::NONE in some instances.

[Steve Borho]

good point, determineLevel() does not even change the encoder's param structure

[Lu Xinyue]

sps->chromaFormatIdc,maxTempSubLayers
ptl->everything

These parameters are required to build hevcC (which is the HEVC version of the avcC)