ICU-22716 Add uregex_match_fuzzer

[FrankYFTang]

Based on https://chromium-review.googlesource.com/c/chromium/deps/icu/+/5465572

Checklist

• Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22716
• Required: The PR title must be prefixed with a JIRA Issue number.
• Required: The PR description must include the link to the Jira Issue, for example by completing the URL in the first checklist item
• Required: Each commit message must be prefixed with a JIRA Issue number.
• Issue accepted (done by Technical Committee after discussion)
• Tests included, if applicable
• API docs and/or User Guide docs changed or added, if applicable

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• icu4c/source/test/fuzzer/uregex_match_fuzzer is no longer changed in the branch
• icu4c/source/test/fuzzer/uregex_match_fuzzer.cpp is now changed in the branch

View Diff Across Force-Push

~ Your Friendly Jira-GitHub PR Checker Bot

[richgillam]

LOKTM.