Improve `storage_alias` and make `UnlockAndUnreserveAllFunds` independent of the pallet (#14773)

* Make `storage_alias` more generic over the `prefix`

* Make `UnlockAndUnreserveAllFunds` indepenend from the pallet

* FMT

* Fix error reporting

* Rename prefix type

* Add test

* Apply suggestions from code review

Co-authored-by: Sam Johnson <[email protected]>

* ".git/.scripts/commands/fmt/fmt.sh"

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Co-authored-by: Sam Johnson <[email protected]>
Co-authored-by: command-bot <>