leaflet-geoman: Incorrect TS typings

@tirli do you mean like this, but before you didn’t have to typecast polygon?

import { PM, Polygon } from 'leaflet';
export type DrawStartEventHandler = (e: {
  shape: PM.SUPPORTED_SHAPES;
  workingLayer: L.Layer;
}) => void;

const a: DrawStartEventHandler = e => {
  const geo = e.workingLayer.toGeoJSON(); // does not work
  const geo2 = (e.workingLayer as Polygon).toGeoJSON(); // works
};

@Falke-Design is there a specific subset of the types that can be passed into the event handlers as workingLayer? Unless all of the types that layer can be set to have a toGeoJSON() method, you would have to typecast to access more type specific methods

PR for the changes: #915

One more addition I just found: rotateMode is missing in ToolbarOptions

Thanks for reporting, we will change 1 and 2.

@ryan-morris can you please answer point 3.