fix(测试用例): 将测试用例里的执行结果字段做成可配置方式

--bug=1008924 --user=宋天阳 【测试跟踪】测试用例，最后结果显示在了最前面，并且没加到表头设置里
https://www.tapd.cn/55049933/s/1083789

frontend/src/business/components/track/case/components/TestCaseList.vue

@@ -46,7 +46,9 @@
         :label="$t('commons.delete_user')"
         min-width="120"/>
 
+      <span v-for="item in fields" :key="item.key">
         <ms-table-column
+          v-if="item.id === 'lastExecResult'"
           prop="lastExecuteResult"
           min-width="100px"
           :label="$t('test_track.plan_view.execute_result')">
@@ -59,7 +61,6 @@
         </template>
       </ms-table-column>
 
-      <span v-for="item in fields" :key="item.key">
         <ms-table-column
           v-if="!customNum"
           :field="item"

frontend/src/common/js/default-table-header.js

@@ -189,6 +189,7 @@ export let CUSTOM_TABLE_HEADER = {
     {id: 'createUser', key: '7', label: 'commons.create_user'},
     {id: 'createTime', key: '8', label: 'commons.create_time'},
     {id: 'desc', key: '9', label: 'test_track.case.case_desc'},
+    {id: 'lastExecResult', key: '10', label: 'test_track.plan_view.execute_result'},
   ],
   //缺陷列表
   ISSUE_LIST: [