feat: support Alt and Meta arrow colors with new colors mapping object

[Vikrambgs]

Description

This PR introduces an architectural upgrade to arrowOptions to resolve the limitation of hardcoded arrow colors options.

Changes:

• Replaces the hardcoded color, secondaryColor, and tertiaryColor variables with a scalable colors object map.
• Unlocks the Alt and Meta/Cmd key modifiers, allowing users to draw up to 5 distinct arrow colors by default.
• Deprecates the legacy color options but retains 100% backward compatibility for existing applications.
• Updates the ArrowOptions Storybook page with distinct inputs for all 5 modifiers.

Motivation:
The previous architecture exhausted the available color variations and prevented developers from taking advantage of other useful keyboard modifiers (like Alt and Meta). This update makes the options fully scalable and gives developers cleaner, more granular control over their UI without breaking any existing apps.

Type of change

• New feature (non-breaking change which adds functionality)
• Documentation update
• Code refactoring

How Has This Been Tested?

• Manual Storybook Testing: Spun up pnpm storybook and verified that drawing arrows with Right-Click, Shift+Right-
  Click, Ctrl+Right-Click, Alt+Right-Click, and Meta+Right-Click correctly resolves and renders all 5 different configured colors.
• Static Testing: Ran pnpm test:static locally to ensure no TypeScript compilation errors or Prettier formatting
  issues were introduced by the updated ChessboardOptions type definitions.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

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