refactor(client): 重构服务类继承关系并统一使用QueryService

重构所有服务类，使其继承自QueryService接口，统一数据查询逻辑。同时为服务类添加@Service注解，确保Spring容器管理。更新相关FXML文件的控制器路径，从manager.ds调整为controller目录结构。调整pom.xml版本号至0.0.84-SNAPSHOT。新增MessageNotitfication和SimpleMessage消息类，提供基础消息结构支持。

client/src/main/java/com/ecep/contract/service/CompanyCustomerEntityService.java

@@ -5,12 +5,14 @@ import java.util.Map;
 
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
 
 import com.ecep.contract.model.CompanyCustomer;
 import com.ecep.contract.model.CompanyCustomerEntity;
 import com.ecep.contract.vm.CustomerEntityViewModel;
 
-public class CompanyCustomerEntityService implements ViewModelService<CompanyCustomerEntity, CustomerEntityViewModel> {
+@Service
+public class CompanyCustomerEntityService extends QueryService<CompanyCustomerEntity, CustomerEntityViewModel> {
     public List<CompanyCustomerEntity> findAllByCustomer(CompanyCustomer customer) {
         throw new UnsupportedOperationException();
     }