[flang] Enumeration Type: (PR 3/5) Intrinsics + I/O + Modules (#193235)
This PR adds intrinsics: HUGE, INT, NEXT, and PREVIOUS. It adds support
for I/O, specifically formatted I/O with explicit format. Also, it adds
module support.
It is the 3rd of 5 stacked PRs.
Assisted-by: AI
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Co-authored-by: Kevin Wyatt <kwyatt@hpe.com>