Use libsndfile for reading MP3 files

[hagenw]

Closes #119

This uses libsndfile to read MP3 files. It requires libsndfile >=1.1.0, which is also a limitation as we still have PCs around with lower versions. I would try to avoid handling MP3 differently depending on the installed libsndfile version, and maybe just wait a few more month until the old versions have finally disappeared.

NOTE: we should also update the benchmarks to see if it is faster.

[codecov]

Codecov Report

Merging #139 (75eb7d3) into main (fb641f3) will not change coverage.
The diff coverage is 100.0%.

Additional details and impacted files

Files	Coverage Δ
audiofile/core/utils.py	100.0% <100.0%> (ø)

[hagenw]

It's part of Ubuntu >=23.04, and should be part of Debian >=12.

[hagenw]

But maybe, soundfile is not using the system wide libsndfile installation, as I get even on Ubuntu 18.04:

>>> import soundfile
>>> soundfile.__libsndfile_version__
'1.2.0'

[hagenw]

Closing in favor of #145