Add Echo MCP tool

[BrunoKrugel]

Hi!

I added a reference to the echo-mcp tool.

I created this lib to automatically convert any Echo API to an MCP Tool that can be called by any agent.

The setup is really simple:

    e := echo.New()

    // Existing API routes
    e.GET("/ping", func(c echo.Context) error {
        return c.JSON(http.StatusOK, map[string]string{"message": "pong"})
    })


    // Add MCP support
    mcp := server.New(e)
    mcp.Mount("/mcp")

    e.Start(":8080")