Missing Outline Preferences for PolygonAnnotation and its options class.

Description

The PolygonAnnotation class in the mapbox_maps_flutter package currently lacks options for configuring the outline (stroke) of polygon annotations. This limitation restricts developers' ability to customize and enhance the visualization of polygons, as the existing implementation only supports filling the polygons without any options for the outline.

Using polylines to simulate polygon borders is not an ideal or efficient solution.

Link to Documentation

PolygonAnnotation Class Documentation

Feature Request

Please add support for outline preferences in the PolygonAnnotationOptions, such as:

• Outline color
• Outline width
• Outline pattern

Example

PolygonAnnotationOptions polygonAnnotationOptions = PolygonAnnotationOptions(
  geometry: polygon,
  fillColor: "#FF0000",
  fillOpacity: 0.5,
  // Proposed properties
  outlineColor: "#000000",
  outlineWidth: 2.0,
  outlinePattern: [2, 4] // Dash pattern: 2px line, 4px gap
);

Start with the PolygonAnnotation and PolygonAnnotationOptions documentation linked in the issue, then trace how existing fill options are represented in the package. Add support for outline color, width, and pattern, and verify that the documented example can configure all three preferences.