Massive refactoring for BM8563

[estshorter]

Changelog

Added

• Add getDateTime() and setDateTime()
• Getters and setters accept a reference as a parameter for consistency

Changed

• New member variable _wire which is a reference to a TwoWire instance. Users can select which instance to use (Wire or Wire1). Default: Wire (no change)
• begin() accepts parameters for TwoWire::begin() to give users flexiblity.

Removed

• Remove magic numbers (registers and masks) by using struct and enum
• Remove getTime(void)
• Remove redundant casts

Fixed

• Fix a bug that date conditions are not disabled in setAlarmIRQ(const rtc_time_t) (see Update BM8563.cpp M5Core-Ink#3)

Note

No API breakage except for removing getTime(void).
I believe this is not an issue because this function only sets a private member variable trdata to data from BM8563, and trdata is not used in the other functions.