Feature: support custom URL icon
Summary
The current version of the Scroll to Top extension allow to define custom icon through the property buttonIcon based on the Fluent UI icons.
Requested feature
The main idea, is to add the capability in addition to the buttonIcon to specify another icon/image based on a custom SharePoint or Internet URL.
Properties
Add the property buttonImage to define a custom image as icon, so that overwrite the buttonIcon one once this latter defined.
Additional information
- Add a string validator to ensure the string is an URL, in other case, the
buttonIconwill be displayed - Update the readme file and add information about the new option