feat: add analytics-service (Spring Cloud Gateway + Consul)

analytics-service/src/main/java/com/posthub/analytics/AnalyticsApplication.java

@@ -0,0 +1,12 @@
+package com.posthub.analytics;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class AnalyticsApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AnalyticsApplication.class, args);
+    }
+}