Feature Request: Add `delete` command to CLI to remove APIs from Microcks

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## Description :
Currently, the Microcks CLI allows users to `import` and `test` APIs, but there is no native way to delete an API directly from the command line. This makes it difficult to maintain clean environments, especially in CI/CD pipelines where we often want to clean up older, unused iterations of an API or tear down temporary mock services.

## Describe the solution you'd like
I would like to see a new `microcks delete` command added to the CLI.

The command should:
- Take the API name and version as a single argument (e.g., ``).
- Look up the internal service ID using the Microcks REST API.
- Safely delete the target service.
- Return a clear success or failure message.

**Proposed Usage:**
`microcks delete "MyService:1.0"`

## Describe alternatives you've considered
The only current alternative is to manually write `curl` scripts to first query the `/api/services/search` endpoint to find the system `id` and then issue a `DELETE` request, or to manage deletions manually through the Web UI. Having this integrated into the CLI is much cleaner.

Start by tracing the existing CLI commands and the Microcks REST API usage, then inspect the /api/services/search endpoint behavior. Done means `microcks delete "MyService:1.0"` resolves the service and removes it safely, with clear success or failure output; verify the command against a temporary service and relevant CLI tests.

Written by the indexing model from the issue text.