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/CompanyCustomerService.java

@@ -1,14 +1,17 @@
 package com.ecep.contract.service;
 
+import java.io.File;
+
+import org.springframework.stereotype.Service;
+
 import com.ecep.contract.MessageHolder;
 import com.ecep.contract.model.Company;
 import com.ecep.contract.model.CompanyCustomer;
 import com.ecep.contract.model.CustomerCatalog;
 import com.ecep.contract.vm.CompanyCustomerViewModel;
 
-import java.io.File;
-
-public class CompanyCustomerService implements ViewModelService<CompanyCustomer, CompanyCustomerViewModel> {
+@Service
+public class CompanyCustomerService extends QueryService<CompanyCustomer, CompanyCustomerViewModel> {
 
     public CompanyCustomer findByCompany(Company company) {
         // TODO Auto-generated method stub