NIFI-15148 - Registry Clients - Support for branch creation

[pvillard31]

Summary

NIFI-15148 - Registry Clients - Support for branch creation

It requires apache/nifi-api#25 and a new NiFi API release.

Not very satisfied with the "Create Branch" modal view but I'm sure someone more familiar with the UI will be able to help getting something better.

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Tracking

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Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
• Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000

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Build

• Build completed using ./mvnw clean install -P contrib-check
  • JDK 21
  • JDK 25

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• New dependencies are compatible with the Apache License 2.0 according to the License Policy
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Documentation

• Documentation formatting appears as expected in rendered files

[exceptionfactory]

Thanks for implementing this new feature @pvillard31.

I reviewed the service changes and the majority of the implementation looks good. I noted a few minor recommendations.

[pvillard31]

Thanks @exceptionfactory - I pushed a commit to address your comments

[pvillard31]

Closing in favor of #11072 that only includes the backend changes. I'll look at a frontend focused PR in the future once the backend changes are merged.