add liveDrawArrow and knightArrow options to arrowOptions

[Vikrambgs]

Description

This PR adds two new configuration options to arrowOptions inside ChessboardOptions to provide developers with finer control over arrow drawing behavior and rendering style:

1. liveDrawArrow (boolean, default: true):
   Controls whether arrow drawing renders a live preview while right-click dragging over squares (true), or delays drawing until the final target square is set upon right-mouse release (false).

2. knightArrow (boolean, default: true):
   Controls whether knight moves are rendered as traditional L-shaped arrows (true), or as direct straight arrows connecting start and end squares (false).

Additionally, ChessboardOptions['arrowOptions'] was updated to Partial<typeof defaultArrowOptions> so consumers can supply partial arrowOptions objects (e.g. arrowOptions={{ liveDrawArrow: false }}) without TypeScript requiring all default properties.

Fixes # N/A

Type of change

[✓] New feature (non-breaking change which adds functionality)
[✓] Documentation update

How Has This Been Tested?

[✓] Static Verification: Ran pnpm run test:static (tsc, eslint, and prettier --check) to ensure 0 TypeScript errors, clean linting, and proper formatting.
[✓] Storybook Integration: Updated ArrowOptions.stories.tsx with interactive toggle controls for liveDrawArrow and knightArrow to test toggling options dynamically.

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
[✓] New and existing unit tests pass locally with my changes
[✓] Any dependent changes have been merged and published in downstream modules

Screenshots (if appropriate):

N/A

Additional context

Default Behavior Preserved

Both options default to true, maintaining 100% backward compatibility with existing chessboard implementations.

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