title: Flutter: How to hide or show more text within certain length
body: <p>My Container having a description of movies.</p>
  <p>Initially, I want to show only a few lines of description. And below that there should be a link (<strong>more...</strong>), After Tapping <strong>more...</strong> all content of description should be get displayed.</p>
  <p>For example, check this <a href="https://www.jqueryscript.net/demo/Read-More-Less-Plugin-jQuery-Shorten/" rel="noreferrer">JQuery plugin</a>.</p>