feat: add feign httpclient

wfc-common/wfc-common-core/pom.xml

@@ -22,6 +22,11 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-openfeign</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>io.github.openfeign</groupId>
+            <artifactId>feign-httpclient</artifactId>
+        </dependency>
         
         <!-- SpringCloud Loadbalancer -->
         <dependency>