Implement prif_co_{min,max,sum} for all interoperable ints and reals

[bonachea]

PRIF 0.5 says prif_co_{min,max} argument:

shall be of type integer with an interoperable kind or of type real with an interoperable kind

and prif_co_sum argument:

shall have any numeric type with an interoperable kind

However based on source inspection of caffeine.c:

• caf_co_{min,max} only supports: int32, int64, float, double
• caf_co_sum only supports: int32, int64, float, double, float complex, double complex

We should add branches to invoke prif_co_reduce for the remaining cases:

• caf_co_{min,max} missing: int8, int16, long double
• caf_co_sum missing: int8, int16, long double, long double complex

We should also add logic to ensure that aliased kind parameters like CFI_type_size_t, CFI_type_long_long, CFI_type_int_least64_t, CFI_type_short, CFI_type_signed_char etc all resolve to the appropriate logic for the four fixed-width integer basic types.