ICU-23001 Add DataLocaleInformation interface

[FrankYFTang]

Checklist

• [x] Required: Issue filed: ICU-23001
• [x] Required: The PR title must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• [x] Required: Each commit message must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• [ ] Issue accepted (done by Technical Committee after discussion)
• [ ] Tests included, if applicable
• [ ] API docs and/or User Guide docs changed or added, if applicable

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Notice: the branch changed across the force-push!

• icu4c/source/common/unicode/brkiter.h is different

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Hooray! The files in the branch are the same across the force-push. 😃

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[jira-pull-request-webhook[bot]]

Hooray! The files in the branch are the same across the force-push. 😃

~ Your Friendly Jira-GitHub PR Checker Bot

[jira-pull-request-webhook[bot]]

Hooray! The files in the branch are the same across the force-push. 😃

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[jira-pull-request-webhook[bot]]

Notice: the branch changed across the force-push!

• icu4c/source/common/locid.cpp is different
• icu4c/source/common/unicode/locid.h is different
• icu4c/source/i18n/calendar.cpp is different
• icu4c/source/i18n/unicode/calendar.h is different

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~ Your Friendly Jira-GitHub PR Checker Bot

[jira-pull-request-webhook[bot]]

Hooray! The files in the branch are the same across the force-push. 😃

~ Your Friendly Jira-GitHub PR Checker Bot

[jira-pull-request-webhook[bot]]

Notice: the branch changed across the force-push!

• icu4c/source/common/brkiter.cpp is different
• icu4c/source/common/unicode/brkiter.h is different
• icu4c/source/common/unicode/locid.h is different
• icu4c/source/i18n/calendar.cpp is different
• icu4c/source/i18n/dtfmtsym.cpp is different
• icu4c/source/i18n/format.cpp is different
• icu4c/source/i18n/unicode/calendar.h is different
• icu4c/source/i18n/unicode/dtfmtsym.h is different
• icu4c/source/i18n/unicode/format.h is different

View Diff Across Force-Push

~ Your Friendly Jira-GitHub PR Checker Bot