Function openPopupMenu

openPopupMenu(options): Promise<any>
This function opens a pop-up modal window where the user can select one item from the data.
Parameters
- options: {
      closable: boolean;
      items: string[];
      title: string;
  }
  Options
  - closable: boolean
    Adds one item to the end to close the menu, returning an index of -1.
  - items: string[]
    The items that will be available for the user to select.
  - title: string
    The title displayed in the selection window.
Returns Promise<any>
A promise that will resolve with the index of the selected item.

Async
- Defined in cheatgui.ts:62