docs: add antv mcp-server-chart

[hustcc]

Description

Add antv mcp-server-chart which is a Model Context Protocol server for generating charts using AntV.

Server Details

• Server: https://github.com/antvis/mcp-server-chart
• Changes to: tools

Motivation and Context

Help user to generate visual charts easily.

How Has This Been Tested?

Yes, the images in readme are the testing results.

Breaking Changes

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: #2007

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.