feat(cosid): add proxy support and update configuration

- Add proxy host and load-balanced configuration to application.yaml
- Introduce NestedConfigurationProperty for proxy properties in CosIdProperties class

Author: Ahoo-Wang

cosid-spring-boot-starter/src/main/java/me/ahoo/cosid/spring/boot/starter/CosIdProperties.java

@@ -16,6 +16,7 @@
 import me.ahoo.cosid.CosId;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.NestedConfigurationProperty;
 
 /**
  * CosId Properties.
@@ -28,7 +29,8 @@ public class CosIdProperties {
     private boolean enabled = true;
 
     private String namespace = DEFAULT_NAMESPACE;
-    
+
+    @NestedConfigurationProperty
     private ProxyProperties proxy = new ProxyProperties();
 
     public boolean isEnabled() {

examples/cosid-example-proxy/src/main/resources/application.yaml

@@ -13,6 +13,9 @@ cosid:
       enabled: true
   snowflake:
     enabled: true
+  proxy:
+    host: http://localhost:8688
+    load-balanced: true
 
 #  segment:
 #    enabled: true