feat: Separate Gateway and Tool server architectures, implement Tool Auto-Registration, and add mock response mapping

src/main/java/io/shinhanlife/AxHubToolApplication.java

@@ -0,0 +1,31 @@
+package io.shinhanlife;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+import java.util.Collections;
+
+@SpringBootApplication
+@EnableScheduling
+@ComponentScan(basePackages = {
+    "io.shinhanlife.axhub.biz.mcp.tool", 
+    "io.shinhanlife.axhub.biz.mcp.adapter", 
+    "io.shinhanlife.axhub.common.mcp"
+})
+public class AxHubToolApplication {
+    public static void main(String[] args) {
+        // 기본 포트는 8082로 설정하되, 파라미터(--server.port=808x)가 있으면 해당 포트로 설정
+        String port = "8082";
+        for (String arg : args) {
+            if (arg.startsWith("--server.port=")) {
+                port = arg.substring("--server.port=".length());
+            }
+        }
+        System.setProperty("server.port", port);
+        
+        SpringApplication app = new SpringApplication(AxHubToolApplication.class);
+        app.run(args);
+    }
+}