Add Opensource Multimodal Voice Client to list of example clients

[Ejb503]

Add opensource Multimodal MCP Client https://github.com/Ejb503/multimodal-mcp-client to list of clients

Is your feature request related to a problem? Please describe.
Current implementation don't adequately cover multi-modal implementations of the MCP.

Describe the solution you'd like
Add comprehensive documentation for the voice MCP client, including:

• Setup instructions for voice recognition and synthesis
• Voice command reference and examples
• Best practices for voice-first interactions
• Troubleshooting guide for common voice-related issues
• Code examples showing voice feature integration
• Configuration options specific to voice features

Additional context
The voice interface is a key differentiator for this project, as highlighted in the README's core features. Proper documentation will help users leverage these capabilities effectively and reduce support requests. This documentation should align with the existing sections in the README that mention voice features.

Client supports Resources/Prompts/Tools