Migrate button-related structures and methods from temphum2 here

[SzigetiJ]

Temphum2 v2.0.0 contains the following structs and functions:

• SButtonDebounceFlags
• SButtonState
• SButtonActions
• static void _configure_button(uint8_t u8Gpio);
• static void _button_init();
• static void _button_cycle(uint64_t u64tckNow);
• static void _button_isr(void *pvParam);

These are slightly generic, thus they belong to esp32basic.

Note, _button_isr() captures (and clears) every GPIO interrupt, maybe it is not the best solution. Also, not sure how to deal with [GPIO-3.14].