Export for type `OptionsWithColumns` is missing

[maxdev1]

Description

Currently when defining explicitly defining an object of type Options with columns and passing it to parse, the TypeScript compiler will complain:

const options: Options<RowType> =  {
    onRecord: this.filterRow.bind(this),
    columns: ["a", "b", "c"],
}
    
const result = parse(content, options)

Type error is:

Argument of type Options<AgentRow> is not assignable to parameter of type OptionsWithColumns<AgentRow>

The reason is that a non-string declaration of parse expects OptionsWithColumns.

Proposed solution

The only way it works without exposing the type is to inline the options, but likely not everybody wants to do that, so exporting OptionsWithColumns would be great so they can simply be used as the type.

// Same definition as from library
type OptionsWithColumns<T> = Omit<Options<T>, "columns"> & {
  columns: Exclude<Options["columns"], undefined | false>;
};

// Defining options with this will work
const options: OptionsWithColumns<RowType> = {
  onRecord: (a) => a,
  columns: ["a", "b", "c"]
}

const result = parse(content, options)