[WIP] Refactor everything server to be more modular and use recommended APIs.

Adding get-structured-content tool

* Updated architecture.md

* added get-structured-content.ts
  - Registers the 'get-structured-content' tool with the provided McpServer instance.
  - The registered tool processes incoming arguments using a predefined input schema,
    generates structured content with weather information including temperature,
    conditions, and humidity, and returns both backward-compatible content blocks
    and structured content in the response.

src/everything/tools/index.ts

@@ -10,6 +10,7 @@ import { registerLongRunningOperationTool } from "./long-running-operation.js";
 import { registerSamplingRequestTool } from "./sampling-request.js";
 import { registerToggleLoggingTool } from "./toggle-logging.js";
 import { registerToggleSubscriberUpdatesTool } from "./toggle-subscriber-updates.js";
+import { registerGetStructuredContentTool } from "./get-structured-content.js";
 
 /**
  * Register the tools with the MCP server.
@@ -22,6 +23,7 @@ export const registerTools = (server: McpServer) => {
   registerGetEnvTool(server);
   registerGetResourceLinksTool(server);
   registerGetResourceReferenceTool(server);
+  registerGetStructuredContentTool(server);
   registerGetTinyImageTool(server);
   registerLongRunningOperationTool(server);
   registerSamplingRequestTool(server);