Single- and Multi-Select Questions with Custom Item Template

If you want to customize an item in a single- or multi-select question (Radiogroup, Checkbox), follow the steps below:

1. Implement a component that renders item markup.
   The item is an object that implements the IAction interface. This object is passed to the component as a prop.

2. Register the component so that it can be accessed by name.
   In React, register the component in ReactElementFactory as shown in the SurveyComponent.jsx file.
   In Angular, register the component in AngularComponentFactory as shown in the custom-choice-item.component.ts file.
   In Knockout, use techniques native to this library: Component Registration in Knockout.

3. Assign the component name to the question's itemComponent property in the survey JSON schema.