Add reading time field to post status info

reading-time-post-status-info.js

import { registerPlugin } from "@wordpress/plugins";
import { PluginPostStatusInfo } from "@wordpress/edit-post";
import { TextControl } from "@wordpress/components";

import {useReadingTime} from "./reading-time-hooks.js";

registerPlugin(
  'reading-time',
  {
    render: ()=> {
      const [value, setValue] = useReadingTime();
      return <PluginPostStatusInfo>
              <TextControl
                label="Reading time"
                onChange={setValue}
                value={value}
            />
        </PluginPostStatusInfo>
    }
  }
);