Allow ColumnDef to be literal string

[Newbie012]

Currently, you can't infer the literal id of a column:

const col = columnHelper.accessor("address" as const, {
  id: "address" as const,
});

col.id; // id?: string | undefined

While it's okay in most cases, I can't build type-safe hooks based on it. For instance, I have a custom hook called useColumnVisibility:

type ColumnVisibilityParams<TData, TValue, TColumns extends ColumnDef<TData, TValue>> = {
  // ...
  columns: TColumn[] ;
  forceVisibleColumns: string[];
  initialSelected: InferColumnDefId<TColumn>[]; // <-- not possible, since ColumnDef["id"] will always be string
};

export default function useColumnVisibility<TData, TValue, ...>

As you can see, since ColumnDef["id"] is always a string, I can't type-safely allow specific string literals.

While I could enforce it by writing a custom lint rule, it would be more natural to accomplish it via types.