Phase 3: core/decorators/input

[teresa-ortega]

Proposed changes

This PR introduces a dynamic input registration system for benchmarks using a functional hook pattern. To keep the core benchmark decorator clean and maintain a strict separation of concerns, the registration logic was extracted into a dedicated InputRegistry. The decorated benchmark function now dynamically exposes an .input method, allowing users to register input hooks.
Additionally, the benchmark context was updated. At runtime, right before the main benchmark executes, these registered hooks are evaluated with the actual context, and their return values are automatically mapped to the context inputs based on the function names.

Type of change

• 🐛 Bugfix (change which fixes an issue)
• 🚀 Feature (change which adds functionality)
• 📚 Documentation (change which fixes or extends documentation)

💥 No breaking changes.

Checklist

Put an x in the boxes that apply. This is simply a reminder of what we will require before merging your code.

• Lint and unit tests (if any) pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Additional comments

N/A

[xaru8145]

First pass.

[xaru8145]

Minor things to go. The PR is ready for review, you can update the draft state.

[xaru8145]

LGTM