Introduce Chat API with message handling, server state updates, and IP-based security restrictions.

backend/src/main/java/com/alttd/altitudeweb/AltitudeWebApplication.java

@@ -4,9 +4,11 @@ import com.alttd.altitudeweb.setup.Connection;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.EnableAspectJAutoProxy;
+import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication(scanBasePackages = {"com.alttd.altitudeweb"})
 @EnableAspectJAutoProxy
+@EnableScheduling
 public class AltitudeWebApplication {
 
     public static void main(String[] args) {