Heart Rate Fix

[ChilloutCharles]

~HR not as reactive due to minimum peak distance setting and wrong filter order~ ~- peak distance changed from sampling rate / 2 -> peak distance at max heart rate~ ~- moved detrend operation as last filter applied~ ~- added z score peak detection~ ~- resample to double the highest bpm for further filtering (nyquist theorem)~

• Replaced Brainflow Filtering with Brainflow Wavelet Denoising and Scipy Butter Filtering.
• Removed z score based peak detection