plugin(jenkins): mark createRouter as deprecated

[lcarva]

Hey, I just made a Pull Request!

As per guidance from #1176, mark the createRouter export as deprecated. This export will be removed later on.

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)
• All your commits have a Signed-off-by line in the message. (more info)

[backstage-goalie]

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
@backstage-community/plugin-jenkins-backend	workspaces/jenkins/plugins/jenkins-backend	patch	v0.11.0

[awanlin]

Hi @lcarva, thanks for wanting to help unfortunately this was already done a few months ago here: https://github.com/backstage/community-plugins/blob/main/workspaces/jenkins/plugins/jenkins-backend/CHANGELOG.md#063 and then followed up here: https://github.com/backstage/community-plugins/blob/main/workspaces/jenkins/plugins/jenkins-backend/CHANGELOG.md#minor-changes.

The reason createRouter still exists is that it it still being used but now only internally to the plugin itself.

[lcarva]

The reason createRouter still exists is that it it still being used but now only internally to the plugin itself.

@awanlin aha! I was wondering if this needed to be done for internal. Thanks for clarifying!