Use SPY as default dividend yield for Index/Future greeks

[Martin-Molinero]

Description

• Index and FOPs will use SPY as the default dividend providers, adding regression algorithms for them

Related Issue

Closes https://github.com/QuantConnect/Lean/issues/8048

Motivation and Context

Improve Index and Futures options greeks

Requires Documentation Change

N/A

How Has This Been Tested?

Existing and new tests

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] Refactor (non-breaking change which improves implementation)
• [ ] Performance (non-breaking change which improves performance. Please add associated performance test and results)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Non-functional change (xml comments/documentation/etc)

Checklist:

• [x] My code follows the code style of this project.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.
• [x] My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>

[AlexCatarino]

What if we add a dividend provider to the underlying Security object and use it if a constant is not provided?