在「管理預算申請列表」裡面新增預算餘額資訊

[orertrr]

Pull request type

Please check the type of change your PR introduces:

• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

What is the current behavior?

Issue Number: #212

What is the new behavior?

• 在 ExpenseEditor 新增以下兩筆資料
  • 已申請合計：採該筆預算底下所有請款單單據（包含正在編輯審核中的請款單）的總和
  • 預算餘額計算：預算總金額 - 已申請合計

Other information