add class BEEPCycleFeatureMatrix to combine features which were generated at every diagnostic cycle

Add CycleFeatures classes and change existing class names to EarlyFeatures where appropriate.

HPPCResistanceVoltageCycleFeatures returns hppc resistance features at every diagnostic.

DiagnosticCycleFeatures returns some standard quantities, like discharge capacity of various RPTs across all diagnostic cycles.

CyclingProtocol returns cycling protocol information for the cell. This was integrated from the ChargingProtocol class written by Amalie Trewartha.

Update DEFAULT_HYPERPARAMETERS and dependent calls to match updates to intracell_analysis.py.

Modify some variable names for easier understanding and consistency across files (e.g. using "diag_pos" in for loop instead of "i").

Update dataframe construction to match updates in intracell_analysis.py.

Modify reference electrode data to be a dictionary of rates and rate file names, instead of file names for one rate; these changes are necessary for other updates which seek to correct for effective rate in the electrodes and utilize multiple rate data of the electrodes.

Incorporate changes for using alternative error metrics, such as dVdQ instead of the V-Q curve.

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