(signed/unsigned) long long/(u)int64_t integer numbers and ULL formatter

[brycecherry75]

64 bit integer numbers (long long/signed long long/unsigned long long/int64_t/uint64_t) along with the ULL formatter are currently not documented although the U/L/UL formatters have been documented in "Integer Constants".
Can I request that the documentation be updated to address this issue with architectures supported (AVR/ARM etc.), minimum Arduino IDE version required and math/compound math supported on such numbers?