Danny 0766ee7afd
GC: SharePoint: ItemType Decouple (#2720)
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ItemTypes for SharePoint were `SharePointItem` only. This did not allow for data to be separated by category. 
Newly created categories:
- SharePointLibrary
- SharePointList
- SharePointPage

Breaks history for `SharePointItems`. All previous SharePoint items are available during `Corso List` command. However, when using the details command with the backup ID for `SharePointItems` restored prior to this PR , the return will be:
```
no items match the specified selectors
```
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#### Does this PR need a docs update or release note?


- [x] 📝 : Will need documentation

#### Type of change

<!--- Please check the type of change your PR introduces: --->
- [x] 🌻 Feature


#### Issue(s)

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* related to #2709<issue>

#### Test Plan

- [x]  Unit test
2023-03-09 15:51:24 +00:00
..
2023-03-08 18:13:30 +00:00