Onboarding to GitOps.ResourceManagement (#408)

* Add prIssueManagement.yml to onboard repo to GitOps.ResourceManagement as FabricBot replacement

* Deleting fabricbot.json

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Co-authored-by: microsoft-github-policy-service[bot] <77245923+microsoft-github-policy-service[bot]@users.noreply.github.com>

Author: microsoft-github-policy-service[bot]