feat: add pathSegments method

[ashphy]

ref #28

Adds a new pathSegments() method to JSONPathJS that returns path segments as arrays of strings and numbers instead of JSONPath strings.
This provides structured access to path components for programmatic use cases.

API Examples

const pathSegmentsResult = query.pathSegments({
	users: [{ name: "John Doe" }, { name: "Jane Doe" }],
});

// [
// 	{ value: "John Doe", segments: ["users", 0, "name"] },
// 	{ value: "Jane Doe", segments: ["users", 1, "name"] },
// ];
console.log(pathSegmentsResult);

[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

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