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Currently corso CLI & SDK have different checks for services enabled. These checks have diverged which can lead to bugs. For e.g. SDK users use [code](3e43028a88/src/pkg/services/m365/users.go (L92)) to check if OD is enabled, while corso uses [this code](https://github.com/alcionai/corso/blob/main/src/pkg/services/m365/api/users.go#L174). These funcs have different checks. This PR introduces common helpers to consolidate these checks in one place.
- Note: I decided against absorbing these helpers into api/users.go, because separation of concerns - getters shouldn't arbitrate on return vals.
- Note that this code is not yet wired up to SDK/CLI. It'll be added in a following [PR](https://github.com/alcionai/corso/pull/4096).
**Changes**
1. `Is*ServiceEnabled` helpers in internal/m365/common.go.
2. Add `GetMailboxInfo` to common code. This is currently a duplicate of code in `GetInfo`. That function will be removed once we port SDK users to `GetMailboxInfo`.
3. Unit tests for common code. Integration tests will be added in a later PR
- Note:`TestIsOneDriveServiceEnabled` is copied from `TestCheckUserHasDrives`. The older test will be removed in a later PR.
---
#### 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
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [x] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* https://github.com/alcionai/corso/issues/3844
#### Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
