Chore/SBOM generation

[tpurschke]

• Generate layered CycloneDX SBOMs for .NET, Python, Ansible, Debian packages, and containers.
• Add opt-in installer generation with merged output and optional controller fetching.
• Generate and upload source SBOMs for release tags and manual workflow runs.
• Document SBOM usage and cover the generator with unit tests.

Fixes #2919

[gitguardian]

️✅ There are no secrets present in this pull request anymore.

If these secrets were true positive and are still valid, we highly recommend you to revoke them.
While these secrets were previously flagged, we no longer have a reference to the
specific commits where they were detected. Once a secret has been leaked into a git
repository, you should consider it compromised, even if it was deleted immediately.
Find here more information about risks.

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^{_{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
95.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud