KiteFFmpegResampler
Converts sample rates with FFmpeg's libswresample, through the aresample filter of the KiteFFmpeg filter graph. Set it in AudioConfig.resampler.
Android, the JVM and Kotlin/Native only. The web build of KiteFFmpeg has no filter graph, so there create throws. The engine then keeps its own resampler and reports PlaybackWarning.ResamplerUnavailable.