Implement a brand new Pipeline System

[MineCake147E]

Backgrounds

• We need to implement more efficient system for signal processing.
  • High throughput for BGM and ambient SFX with new architecture
  • Low Latency for SFX with existing architecture

Idea and Progress

• Add interface IPipelineComponent<TSample, TFormat>.
  • async Task UpdateAsync() to swap buffer and process next block asynchronously.
• Add class PipelineInput<TSample, TFormat> that translates IReadableAudioSource<TSample, TFormat> or IAsynchronouslyReadableAudioSource<TSample, TFormat> to be read as IPipelineComponent<TSample, TFormat>.
• Add interface IPipelineOutput<TSample, TFormat> that can be read as IReadableAudioSource<TSample, TFormat>.
• Add class AudioPipe<TSample, TFormat> that connects two IPipelineComponent<TSample, TFormat>.
• Add struct AudioBuffer<TSample, TFormat> that holds single processing block.