change ISAR_post_rend command-line description

The usage of the "ISAR_post_rend" program is as follows:

--------------------------------------------------------

Usage: ISAR_post_rend [options]

Usage: ISAR_post_rend [options] -i <path> -if <format> -o <path>

Mandatory parameters:

---------------------

-i File             : Input Audio File (input file is bitstream if format is BINAURAL_SPLIT_CODED, or PCM/WAV file if format is BINAURAL_SPLIT_PCM)

-if Format          : Format of Input File (BINAURAL_SPLIT_CODED, BINAURAL_SPLIT_PCM, ...); Use -l to get a list of supported formats

-o File             : Output Audio File in BINAURAL format

--input_file, -i <path>                 : Path to the input file (WAV or raw PCM file with BINAURAL_SPLIT_PCM input format or ISAR bitstream file with BINAURAL_SPLIT_CODED input format)

--input_format, -if <format>            : Audio format of input file (e.g. BINAURAL_SPLIT_CODED, BINAURAL_SPLIT_PCM, ... Use -l for a list)

--output_file, -o <path>                : Path to the output file

Options:

--------

-im Files           : Input Metadata File for BINAURAL_SPLIT_PCM format

-fs                 : Input sampling rate in kHz (16, 32, 48) - required only with raw PCM inputs

-T File             : Head rotation trajectory file for simulation of head tracking

-prbfi File         : Split rendering BFI (Bad Frame Indicator) file

-no_delay_cmp       : Turn off delay compensation

-level              : Complexity level, level = (1, 2, 3), will be defined after characterisation.

-q                  : Quiet mode, limit printouts to terminal, default is deactivated

-l                  : List supported audio formats

-fr                 : Set audio rendering frame size

-s File             : Path to the split rendering init params file

--input_metadata, -im <path>            : Path to the input metadata file for BINAURAL_SPLIT_PCM input format

--sample_rate, -fs <fs>                 : Input sampling rate in kHz (16, 32, 48) - required only with raw PCM input files

--trajectory_file, -T <path>            : Head rotation trajectory file for simulation of head tracking

--post_rend_bfi_file, -prbfi <path>     : Split rendering BFI (Bad Frame Indicator) file

--no_delay_compensation, -no_delay_cmp  : Turn off delay compensation

--complexity_level, -level <level>      : Complexity level (1, 2, 3) - will be defined after characterisation

--quiet, -q                             : Quiet mode - limit printouts to terminal

--list, -l                              : List supported audio formats of input file

--framing, -fr <size>                   : Set audio rendering frame size in ms (5, 10, 20)

--sr_params, -s <path>                  : Path to the split rendering init params file

--help, -h                              : Show this help message and exit

The usage of the "ambi_converter" program is as follows:

--------------------------------------------------------