VVC support

NOTE: VVC is not yet finalized, and at the stage of test model so it can crash/don't work/behave strangely.

• Added experimental VVC support
• Temp YUV files created at the start of encoding for the segment, and removed after.
• Concatenation to VVC bitstream is done by parcatStatic from VVC repository.

Usage

The encoding requires compiled encoder, bitstream concatenator, config_file from the VVC repository.

• EncoderAppStatic and parcatStatic must be named vvc_encoder, vvc_concat, and placed in the directory from where they can be reachable, the same directory or somewhere in PATH. Place the chosen config file for the encoder in encoding folder.

• Encoder set to VVC by -enc vvc

• Config file passed to Av1an by --vvc_conf CONFIG_FILE

• Required video encoding parameters:
  -wdt X - video width
  -hgt X - video height
  -fr X - framerate
  -q X - quantizer
  Example: -v " -wdt 640 -hgt 360 -fr 23.98 -q 30 "

• After encode is done output file with extension .h266 will created
  It can be decoded to .yuv with VVC compliled decoder :
  DecoderAppStatic -d 8 -b encoded.h266 -o output.yuv
  Keep in mind that encoding time is excessive
  

Target VMAF for Rav1e, SVT-AV1, VPX

• min_cq max_cq changed to min_q ,max_q
• Default min_q max_q are set based on encoder.
• Encoders must be in mode that requires setting quantizer. (--crf, --cq-level, --quantizer etc)

Examples:

Changed default passes for encoders

svt_av1: 1 
rav1e:   1
aom:    2
vpx:     2
x265:    1 
vvc:    1

Also, default encoding settings changed accordingly