✨ 添加新特性，支持客户端模式令牌方法

pigx-common/pigx-common-core/src/main/java/com/pig4cloud/pigx/common/core/constant/SecurityConstants.java

@@ -120,4 +120,9 @@ public interface SecurityConstants {
 	 */
 	String RESOURCE_SERVER_CONFIGURER = "resourceServerConfigurerAdapter";
 
+	/**
+	 * 客户端模式
+	 */
+	String CLIENT_CREDENTIALS = "client_credentials";
+
 }