Support report error message

Author: qianmoQ

pom.xml

@@ -5,7 +5,7 @@
 
     <groupId>org.devlive.sdk</groupId>
     <artifactId>openai-java-sdk</artifactId>
-    <version>1.1.0</version>
+    <version>1.2.0-SNAPSHOT</version>
 
     <name>openai-java-sdk</name>
     <description>

src/main/java/org/devlive/sdk/openai/exception/DefaultException.java

@@ -1,8 +1,11 @@
 package org.devlive.sdk.openai.exception;
 
+import lombok.Getter;
+
 public class DefaultException
         extends RuntimeException
 {
+    @Getter
     private final String message;
 
     public DefaultException(String message)