Add WAIaaS to community servers

[minhoyoo-iotrust]

Summary

• Add WAIaaS (Wallet-as-a-Service for AI Agents) to the community servers list in alphabetical order under "W" entries
• WAIaaS is a self-hosted wallet daemon providing 60 MCP tools for multi-chain crypto operations (EVM + Solana)
• Features: transfers, DeFi (swap, lend, stake, bridge, perp, yield), NFTs, smart contracts, transaction signing, x402 payments, session-based auth with spending policies
• Repository: https://github.com/minhoyoo-iotrust/WAIaaS
• TypeScript implementation

🤖 Generated with Claude Code

[olaservo]

Thanks for contributing to the MCP servers repo!

We've retired the third-party server list from the README in favor of the MCP Registry — see #3950 for context. The Official Integrations and Community Servers sections no longer exist in the README, so this PR no longer has a target.

Going forward, please publish your server to the MCP Registry using the quickstart guide:
https://github.com/modelcontextprotocol/registry/blob/main/docs/modelcontextprotocol-io/quickstart.mdx

That's where server discovery now happens. Thanks for building on MCP!

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Note: I'm working through the backlog with help from Claude Code to give everyone a prompt response.