v5: Update ifx flags, updates for MAPL3

This release of v5 updates ifx flags after testing. It also has fixes for MAPL3 development.

Zero-diff for all compilers save ifx.

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From CHANGELOG.md

Changed

• Updated Release and Aggressive IntelLLVM (ifx) flags after testing
• Changes to use the split CAP.yaml linked to MAPL PR #5371 and Issue #5355

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What's Changed

• v5: Support split CAP.yaml by @mathomp4 in #580
• v5: Update ifx flags by @mathomp4 in #579
• GitFlow: Merge develop into main for releas by @mathomp4 in #581

Full Changelog: v5.17.0...v5.18.0