GET /api/sheet?spreadsheetId=ID&sheetName=Sheet1POST /api/sheetBody: {"spreadsheetId": "ID", "sheetName": "Sheet1", "range": "A1:B2", "values": [["Data"]]}
PUT /api/sheetBody: {"spreadsheetId": "ID", "sheetName": "Sheet1", "values": [["Data"]]}
DELETE /api/sheetBody: {"spreadsheetId": "ID", "sheetName": "Sheet1", "range": "A1:B2"}
POST /api/sheet/clearCellBody: {"spreadsheetId": "ID", "sheetName": "Sheet1", "cell": "A8"}
Body: {"spreadsheetId": "ID", "sheetName": "Sheet1", "range": "A8:C10"}
GET /api/sheet/getFirstSheetData?spreadsheetId=IDTrả về dữ liệu từ sheet đầu tiên trong spreadsheet