add aoa_to_sheet because it was missing

below are still missing, but i require aoa only.
split_cell:
format_cell
get_formulae
make_csv
make_json
make_formulae
table_to_sheet
table_to_book
sheet_to_row_object_array

index.d.ts

@@ -253,6 +253,8 @@ export interface IRange {
 }
 
 export interface IUtils {
+    /** converts an array of arrays of JS data to a worksheet. */
+	aoa_to_sheet<T>(data:Array, opts?:any);
     /** Converts a worksheet object to an array of JSON objects */
     sheet_to_json<T>(worksheet:IWorkSheet, opts?: {
         raw?: boolean;