## Description
Extend the kopia metrics to include the snapshot's TotalFileSize parameter. This value also gets used as the metric for BytesWritten at the end of a
backup.
## Type of change
- [x] 🌻 Feature
## Issue(s)
* #894
## Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
## Description
Backup and Restore metrics need to know the
count of resource owners in the operation. This
processor extracts that data from the collections
that get passed from producer to consumer.
## Type of change
- [x] 🌻 Feature
## Issue(s)
* #894
## Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
* store backup operation results in the backup manifest
Adds backup operation metadata like the outcome
statistics and selector definitions to the backup manifest
entry. These additional details will appear when users
call `corso backup list`.
