feat(plan): 添加学生学案历史查询及展示功能

- 新增FindStudentPlanHistoryReqVO和FindStudentPlanHistoryListRspVO数据对象
- 将LessonPlansDO及StudentLessonPlansDO中日期类型由Date改为LocalDateTime
- LessonPlansServiceImpl中创建时间使用LocalDateTime.now()
- StudentLessonPlansService及实现类添加按学生ID查询学案历史接口
- StudentLessonPlansDOMapper及XML添加按学生ID查询学案历史SQL映射
- StudentLessonPlansController新增/history接口返回学生学案历史列表
- 前端student.vue新增学案历史图表PlanHistoryChart组件展示学案历史数据
- 新增PlanHistoryChart.vue组件，实现基于echarts的学案历史折线图
- studentLessonPlans.js新增findStudentPlanHistory接口调用后端学案历史数据接口

enlish-service/src/main/resources/mapper/StudentLessonPlansDOMapper.xml

@@ -45,6 +45,12 @@
         SELECT count(DISTINCT student_id) AS total
         FROM student_lesson_plans;
     </select>
+    <select id="selectStudentLessonPlanListByStudentId" resultMap="BaseResultMap">
+        SELECT *
+        FROM student_lesson_plans
+        WHERE student_id = #{studentId}
+        limit 500
+    </select>
 
     <update id="finfishStudentPlan">
         update student_lesson_plans