feat: increase api_key length and enhance ModelConfig annotations (#32)

* refactor: rename artifactId and application name to 'datamate'; add model configuration and related services

* refactor: simplify package scanning by using wildcard for mapper packages

* feat: add model health check functionality and improve model configuration

* feat: increase api_key length and enhance ModelConfig annotations

backend/shared/domain-common/src/main/java/com/datamate/common/models/domain/entity/ModelConfig.java

@@ -2,10 +2,7 @@ package com.datamate.common.models.domain.entity;
 
 import com.baomidou.mybatisplus.annotation.TableName;
 import com.datamate.common.domain.model.base.BaseEntity;
-import lombok.Builder;
-import lombok.Getter;
-import lombok.Setter;
-import lombok.ToString;
+import lombok.*;
 
 /**
  * 模型配置实体类
@@ -18,6 +15,8 @@ import lombok.ToString;
 @TableName("t_model_config")
 @Builder
 @ToString
+@NoArgsConstructor
+@AllArgsConstructor
 public class ModelConfig extends BaseEntity<String> {
     /**
      * 模型名称（如 qwen2）