Add USA Spending MCP server

[thsmale]

MCP Server Information

Server Name: usaspending-mcp-server
Repository URL: https://github.com/thsmale/usaspending-mcp-server
Brief Description: This reads the official source of government spending data. Which enables one to track government spending over time, search government spending by agency, explore government spending to communities, and more.

Basic Requirements

• Open Source: Uses acceptable license (Apache-2.0, MIT, BSD-2-Clause, BSD-3-Clause or other permissive license)
• MCP Compliant: Implements MCP API specification
• Active Development: Recent commits and maintained
• Docker Artifact: Dockerfile
• Documentation: Basic README and setup instructions
• Security Contact: Method for reporting security issues

Submitter Checklist

• This server meets the basic requirements listed above
• I understand this will undergo automated and manual review.
• I have tested the MCP Server using task validate -- --name usaspending-mcp-server
• I have built the MCP Server using task build usaspending-mcp-server