docs: add webfiori/http v6.0.2 features to web-services page

[usernane]

Summary

Updates web-services.md documentation to cover new features in webfiori/http v6.0.2.

Motivation

New features (#141–#144 in webfiori/http) need documentation: #[ApiResponse], #[RestController(path:)], OpenAPISpecService, and namespace scanning.

Changes

• Added #[ApiResponse] and #[RequestParam] to annotations table
• New subsections in OpenAPI Documentation: Declarative Response Descriptions, Custom Route Paths, Built-in OpenAPI Spec Service, Namespace Scanning, Returning JsonI from ResponseBody
• Updated ServiceRouter discover example to show path property
• Updated table of contents

How to Test / Verify

Review rendered markdown for accuracy and completeness.

Breaking Changes and Migration Steps

None. Documentation only.

Checklist

• I reviewed my own diff before requesting review
• My commits follow Conventional Commits
• The title of the pull request follows Conventional Commits
• I added/updated tests (or explained why not)
• I updated docs (if needed)
• I ran lint/cs-fixer (if applicable)
• I considered backward compatibility
• I considered security

Related issues

Related to WebFiori/http#141, WebFiori/http#142, WebFiori/http#143, WebFiori/http#144