Consider providing value of entity in iterators

[jamesgpearce]

eg, in https://tinybase.org/api/store/type-aliases/callback/rowcallback/ change from

(
  rowId: Id,
  forEachCell: (cellCallback: CellCallback) => void,
): void

to

(
  rowId: Id,
  forEachCell: (cellCallback: CellCallback) => void,
  row: Row, // <- add this
): void

Via @founderYonz

[jamesgpearce]

I have decided not to add this since it adds a performance overhead for every usage of these iterator functions, even if people don't need the direct value of the entity.

Instead, just call getRow(tableId, rowId) in your callback if you need it.