PWX-38559: clean errored out snapshot cr older than a certain time period

[strivedi-px]

What type of PR is this?

bug-fix

What this PR does / why we need it: Addresses PWX-38559. Adds utility to clean up volumesnapshot CRs that are in Error state and are older than a certain cutoff time period.

Does this PR change a user-facing CRD or CLI?: No

Is a release note needed?: No

Does this change need to be cherry-picked to a release branch?: Yes, 24.3.1 I suppose.

Sample test run

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 25.78616% with 118 lines in your changes missing coverage. Please review.

Please upload report for BASE (stork-24.3.1-fb@c118327). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/snapshot/controllers/snapshot.mock.go	19.82%	93 Missing :warning:
pkg/snapshot/controllers/snapshotschedule.go	41.86%	21 Missing and 4 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## stork-24.3.1-fb #1839 +/- ## ================================================== Coverage ? 32.66% ================================================== Files ? 60 Lines ? 13640 Branches ? 0 ================================================== Hits ? 4455 Misses ? 8781 Partials ? 404 ```

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