Have a way to gather stats about the exported data.
Users can now call `ExportOperation.GetStats()` at the end of the run to get the stats for the operations. The data will be in the format `map[path.CategoryType]data.KindStats` whre `KindStats` is:
```go
type KindStats struct {
BytesRead int64
ResourceCount int64
}
```
---
#### 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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- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 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/4311
#### Test Plan
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- [ ] 💪 Manual
- [x] ⚡ Unit test
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reduces channel message export data to the minimal set of valuable info: message content, creator,
creation and modification time, and replies (each
reply has the same data, sans other replies).
---
#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Issue(s)
* #3991
#### Test Plan
- [x] 💪 Manual
- [x] 💚 E2E
various tidbits of data cleanup before moving forward with adding export behavior to groups.
* move duplicate collections mocks into data/mock
* move the export collection struct into pkg/export (to prevent future duplicates in the next PR)
* rename export.Collection to Collectioner, because it's an interface.
* some other non-logic rearrangement
---
#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #3991
#### Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
This borrows a lot of the core logic from OneDrive as the internal structure is mostly the same.
<!-- PR description-->
Prev: https://github.com/alcionai/corso/pull/3822
---
#### Does this PR need a docs update or release note?
- [x] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [ ] ⛔ No
#### Type of change
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- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
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- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* fixes https://github.com/alcionai/corso/issues/3823
#### Test Plan
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- [x] ⚡ Unit test
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Core logic for exporting data from OneDrive
Next: https://github.com/alcionai/corso/pull/3820
---
#### Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [x] 🕐 Yes, but in a later PR
- [ ] ⛔ No
#### Type of change
<!--- Please check the type of change your PR introduces: --->
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 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/3670
* https://github.com/alcionai/corso/pull/3797
#### Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
