fixes up the generation of paths in drive testing so that paths are created correctly and consistently, even for values that will have escaped slashes.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🤖 Supportability/Tests
#### Issue(s)
* #4689
#### Test Plan
- [x] ⚡ Unit test
adds some new functions to the drive limiter that will be used specifically in the tree-based backup process. Also updates the limiter tests to have separate versions for the tree and non-tree variations. In this PR, the tree variation will definitely fail. The next PR will be focused on backup process corrections needed to ensure that the limit handling is correct according to the existing tests.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Issue(s)
* #4689
#### Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
now that folder handling is complete, we can ingest items in the delta tree as well.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Issue(s)
* #4689
#### Test Plan
- [x] ⚡ Unit test
begins implementation of the drive delta tree support by adding boilerplate funcs for getting the backup data, and adding a framework of unit tests that will be used bring testing parity up to par with current tests.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Issue(s)
* #4689
#### Test Plan
- [x] ⚡ Unit test
