refactor(multiple): add types for string-based enum inputs

[andrewseguin]

export type GridRowRole = 'row' | 'rowheader';
export type GridCellRole = 'gridcell' | 'columnheader';
export type GridFocusMode = 'roving' | 'activedescendant';
export type GridWrapStrategy = 'continuous' | 'loop' | 'nowrap';
export type ListFocusMode = 'roving' | 'activedescendant';
export type ListOrientation = 'horizontal' | 'vertical';
export type ListSelectionMode = 'follow' | 'explicit';
export type ComboboxFilterMode = 'manual' | 'auto-select' | 'highlight';
export type GridSelectionMode = 'follow' | 'explicit';
export type TreeCurrentType = 'page' | 'step' | 'location' | 'date' | 'time' | 'true' | 'false';