Feat: add McpToolBody which Annotates tool method parameter which is a business object

[24kpure]

design

During the development of MCP tools, when a method requires multiple parameters, using the @McpToolParam annotation may reduce code readability. To address this, inspired by the @RequestBody（org.springframework.web.bind.annotation.RequestBody） annotation in the Spring framework, I have added the @McpToolBody annotation. This allows parameters to be passed as a structured business object, thereby improving code clarity and maintainability.

example

    // use  @McpToolParam
    @McpTool(name = "calculate-area", 
             description = "Calculate the area of a rectangle")
    public AreaResult calculateRectangleArea(
            @McpToolParam(description = "Width of the rectangle", required = true) double width,
            @McpToolParam(description = "Height of the rectangle", required = true) double height) {
        double area = width * height;
        return new AreaResult(area, "square units");
    }

   // use  @McpToolBody
   @McpTool(name = "calculate-area", 
             description = "Calculate the area of a rectangle")
    public AreaResult calculateRectangleArea(
            @McpToolBody CalculateAreaRequest toolBody) {
        double area = request.getWidth() * request.getHeight();
        return new AreaResult(area, "square units");
    }

    public static class CalculateAreaRequest {
        @McpToolParam(description = "Width of the rectangle", required = true)
        private double width;
        @McpToolParam(description = "Height of the rectangle", required = true) 
        private double height;

        public double getWidth() {
            return width;
        }

        public void setWidth(double width) {
            this.width = width;
        }

        public double getHeight() {
            return height;
        }

        public void setHeight(double height) {
            this.height = height;
        }
    }

changelist

• add file McpToolBody
• correct the syntax errors in the comments of file `McpProgress
• correct the syntax errors in the comments of file `McpPrompt
• add McpToolBody input support in org.springaicommunity.mcp.method.tool.utils.JsonSchemaGenerator#internalGenerateFromMethodArguments
• Add McpToolBody parameter conversion support in org.springaicommunity.mcp.method.tool.AbstractMcpToolMethodCallback#buildMethodArguments
• add McpToolBody example in readme