README - replace code snippets with examples - direct execution and display utilities

[ihrpr]

Part 3:

• direct execution example
• display utilities
• extend structured output

Part 1: #1055
Part 2: #1136

Remaining:

• Auth

  • Authentication server example
  • OAuth client authentication

• Remote MCP (streamable Http)

  • Streamable HTTP client
  • Streamable HTTP server examples
  • SSE server mounting examples (just change to mounting )

• Low-level examples

  • Low-level server with lifespan
  • Low-level server basic example
  • Low-level server structured output

[felixweinberger]

👍