Feature/SK-1024 | Implement EU-compliant analytics (docs)

[niklastheman]

Load simple analytics js

[Copilot]

Pull Request Overview

This PR uses Simple Analytics, an EU-compliant alternative, by adding Simple Analytics JavaScript to the documentation configuration.

• Adds Simple Analytics JavaScript configuration to documentation
• Implements EU-compliant analytics solution
• Includes security measures with SRI (Subresource Integrity) hashes

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