feat: add GetAllInstanceShovels method and integrate shovel cleanup b…

[Smet2133]

…efore queue deletion

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

TDB

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Breaking Change checklist

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Added/updated tests?

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
84.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud