feat: create manage-common module structure

novalon-manage-api/manage-common/src/main/java/cn/novalon/manage/common/exception/BusinessException.java

@@ -0,0 +1,22 @@
+package cn.novalon.manage.common.exception;
+
+public class BusinessException extends RuntimeException {
+
+    private final String code;
+    private final String message;
+
+    public BusinessException(String code, String message) {
+        super(message);
+        this.code = code;
+        this.message = message;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    @Override
+    public String getMessage() {
+        return message;
+    }
+}