Sheet Cell is a primitive to generate CellData object
How to use SheetCell
import { SheetCell } from "@rowsncolumns/spreadsheet-state"
const sheetCell = new SheetCell()
// Extend if necessary from existing cellData
const existingCellData = {}
sheetCell.assign(sheetId, { rowIndex, columnIndex }, existingCellData)
// Set user entered value
sheetCell.setUserEnteredValue("$20")
// Get cell data
const cellData = sheetCell.getCellData()
CellData is the cell representation used in Spreadsheet 2