## Description
Begin populating a global exclude set with files deleted from OneDrive. The set contains the IDs of files that have been deleted.
This is actually safe to return from GraphConnector now (though it's not returned) as it uses item IDs instead of item names.
Future PRs will need to address handling of (potentially) moved files
## Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
## Type of change
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
## Issue(s)
* #2242
## Test Plan
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
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