Add helper method to ensure benchmark folder existency

[ravikiranvm]

Fixes OPS-3752

Additional Notes

This PR implements minimal service for create benchmark endpoint that ensures Benchmark folder exists for a given provider.

Also add a new method in folder service that checks for a folder and creates one.

[linear]

OPS-3752 Add a helper to check for benchmark folder

[Copilot]

Pull request overview

Adds a small benchmark service layer to ensure a provider-specific benchmark folder exists (creating it if necessary), and introduces unit tests for the new behavior. This fits into the existing benchmark feature area alongside the wizard/provider adapters.

Changes:

• Added getBenchmarkFolderDisplayName, ensureBenchmarkFolder, and createBenchmark in the benchmark service layer.
• Added unit tests covering provider display name resolution, folder ensure behavior, and basic createBenchmark response shape.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/server/api/src/app/benchmark/create-benchmark.service.ts	Introduces helper(s) to resolve benchmark folder name, ensure the folder exists via flowFolderService, and build a CreateBenchmarkResponse.
packages/server/api/test/unit/benchmark/create-benchmark.service.test.ts	Adds unit coverage for provider handling and folder creation/reuse behavior via mocked flowFolderService.

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

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

See analysis details on SonarQube Cloud