Update `FFTParam` to streamline `maxFFT` 

Impacts the following: 
```
AudioTransportClient
BaseSTFTClient
ChromaClient
HPSSClient
MFCCClient
MelBandsClient
NMFFilterClient
NMFMatchClient
NMFMorphClient
NoveltyFeatureClient
NoveltySliceClient
OnsetFeatureClient
OnsetSliceClient
PitchClient
SinesClient
SpectralShapeClient
NoveltyFeatureClient
NoveltySliceClient
```

and any buffer counterparts 