Added public facing GetBackupSummaryBeforeBackupID function. This returns a BackupSummary type that contains backup information of all entries prior to the specified backup ID.
:arrow_up: Go test coverage increased from 95.3% to 95.7% compared to 359097363ab112e2aa925b8a996314ba54aa33d5
Updated Package Coverages:
```diff
# Package Name | Prior | New
+ github.com/mr-stringer/hanautil | 95.3% | 95.7%
```
View coverage for all packages
```diff
# Package Name | Coverage
+ github.com/mr-stringer/hanautil | 95.7%
```
Added public facing GetBackupSummaryBeforeBackupID function. This returns a BackupSummary type that contains backup information of all entries prior to the specified backup ID.