Adds a new type of entry to the fault bus: Alerts. These values are for non-erroneous messages that we want 1/ clearly displayed to the user at the end of an operation and 2/ persisted with the backup for later review.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Issue(s)
* #4264
#### Test Plan
- [x] ⚡ Unit test