feat(oa): 新增客户管理和资金日记账功能

- 添加客户管理相关实体、控制器、服务和映射
- 实现客户信息的增删改查功能
- 添加资金日记账相关实体、控制器、服务和映射
- 实现资金日记账的增删改查功能
- 优化数据库连接配置
- 更新 BOM 项关联的表名

gear-oa/src/main/resources/mapper/oa/GearJournalMapper.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.gear.oa.mapper.GearJournalMapper">
+
+    <resultMap type="com.gear.oa.domain.GearJournal" id="GearJournalResult">
+        <result property="journalId" column="journal_id"/>
+        <result property="journalDate" column="journal_date"/>
+        <result property="summary" column="summary"/>
+        <result property="transType" column="trans_type"/>
+        <result property="counterpart" column="counterpart"/>
+        <result property="incomeAmount" column="income_amount"/>
+        <result property="expenseAmount" column="expense_amount"/>
+        <result property="balanceAmount" column="balance_amount"/>
+        <result property="remark" column="remark"/>
+        <result property="createBy" column="create_by"/>
+        <result property="createTime" column="create_time"/>
+        <result property="updateBy" column="update_by"/>
+        <result property="updateTime" column="update_time"/>
+        <result property="delFlag" column="del_flag"/>
+    </resultMap>
+    <select id="getLastBalance" resultType="java.math.BigDecimal">
+        SELECT balance_amount
+        FROM gear_journal
+        WHERE del_flag = 0
+        ORDER BY create_time DESC
+        LIMIT 1
+    </select>
+
+
+</mapper>