Add official AllVoiceLab MCP Server to README

[allvoicelab]

Description

Official AllVoiceLab Model Context Protocol (MCP) server.

Server Details

• Server: AllVoiceLab MCP Server
• Changes to: README.md

Motivation and Context

Enables MCP clients like Claude Desktop, Cursor, Windsurf, OpenAI Agents to generate speech, translate videos, and perform intelligent voice conversion.

How Has This Been Tested?

only add a link to Readme, the mcp server itself has been tested by cursor, Claude, cherry studio

Breaking Changes

no

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

[olaservo]

Thanks for your contribution to the servers list. This has been merged in this combined PR: #2144

This is a new process we're trying out, so if you see any issues feel free to re-open the PR and tag me.