Find Parent Work Item

[jeo02]

https://github.com/Azure/azure-sdk-tools/blob/6e6038ab75feb6b557b0ed360b94ba5413e33ff9/eng/common/scripts/Helpers/DevOps-WorkItem-Helpers.ps1#L173C90-L173C116

• Finds the parent work item given a service name, package display name, tag, plus that flag to filter out test release plans.
• Will require making a query which there is existing functionality for.
• Ignore caching for now.