Add support for new 'icon' param of places service

[gowin20]

Describe the problem

The places service has added a new icon parameter to most requests that allows you to request an icon as PNG, SVG, or CIM. REST JS does not currently support this operation.

Describe the proposed solution

We should add support for this parameter to align REST JS with the functionality described on this page: https://developers.arcgis.com/documentation/mapping-apis-and-services/places/place-icons/

Alternatives considered

No response

Additional Information

No response