Corrections in the OMASA format conversion function

The latest MASA reference software version, available at https://www.3gpp.org/ftp/tsg_sa/WG4_CODEC/TSGS4_122_Athens/Docs/S4-230221.zip, includes the masaAnalyzer and masaRenderer binaries. In this version, the -foa and -hoa2 command-line arguments have been replaced with -foaext and -hoa2ext, respectively. This change should be incorporated into the Python wrappers.

Additionally, the masaAnalyzer() wrapper function currently requires an existing directory for storing the MASA metadata file generated by the masaAnalyzer binary. This requirement may be removed, allowing the use of a temporary directory instead.