<!-- PR description-->
Centralizing the suffixes so that group mailbox and future services can also use them.
* Move `.meta`, `.data`, `.dirmeta` definitions from `internal/m365/collection/drive/metadata` pkg to `pkg/services/m365/api/graph/metadata`.
* Adjust package names in misc places.
* No logic change.
* We should probably keep all metadata definitions and code in one place, i.e. relocate drive metadata definitions to `pkg/services/m365/api/graph/metadata`. This is a bigger change, we can do it later.
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#### 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
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- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
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* #<issue>
#### Test Plan
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- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E