div_s32s32() function

Optimized 32 and 64 bit division functions accelerated by the RP2040 hardware divider Additionally provides integration with the C `/` and `%` operators \file pico/divider.h High level APIs including combined quotient and remainder functions for 32 and 64 bit accelerated by the hardware divider These functions all call __aeabi_idiv0 or __aebi_ldiv0 on division by zero passing the largest applicably signed value Functions with unsafe in their name do not save/restore divider state, so are unsafe to call from interrupts. Unsafe functions are slightly faster. Integer divide of two signed 32-bit values