[Flang][OpenMP] Add support for logical and reduction in worksharing-loop

Adds support for .and. reductions with logical types.

Because arith.addi doesn'to work with fir.logical<4> types
logical<4> must be converted to i1 prior to the operation.

This means that the pattern matched by integer reductions
(load -> op -> store) will not match logical reductions.
Instead, the pattern being searched for here is
load -> convert(logical<4> to i1) -> op -> convert(i1 to logical<4>) -> store

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D132228