Implement MCP server setup and stdio transport

[AngusHsu]

Description

Create the MCP server core at src/server.ts and entry point at src/index.ts.

src/server.ts

• Create MCP server instance with name and version
• Register tools (initially empty, tools added in Implement query_festival MCP tool #7)
• Export server creation function

src/index.ts

• Import server
• Connect via stdio transport
• Handle graceful shutdown

Depends on

• Initialize package.json with project metadata #1, Install dependencies and configure TypeScript #2, Configure ESLint and npm scripts #3 (project scaffolding)

Acceptance Criteria

• src/server.ts creates and exports MCP server
• src/index.ts starts server with stdio transport
• Server starts without errors via npm run dev
• Build passes