Plugin for custom horizontal line Y-axis marker on grid of a Line chart with Chart.js
<p>I need to create "up" and "low" markers on along the Y-axis of my Chart.js line chart. I can't seem to find an out-of-the-box way of doing this.  Anybody can help me on how to write a plugin to achieve something like this? (See the horizontal red lines along the 70 and 50 Y-axis.
<a href="https://i.stack.imgur.com/8nNWS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8nNWS.png" alt="enter image description here"></a></p>