This addon is last updated in 2014:
This extension displays an icon next to the cursor indicating the target of a link
chrome.google.com
But its good one.
Is it ok to use it in the Edge?
The extension description is not wrong to date. It hasn't changed, since its creation.
For what it's worth... If you use userscript (managers) in your browser like TamperMonkey, ViolentMonkey or FireMonkey(firefox only). Then there is an even easier (read more managable) way of going about this. Only if you have such a manager installed, this would be easier, and it would mean one less extension. I won't advise it just for the sake of this one thing, though.
A very quickly written example userscript(.js) would be something like the below script. All this example does is to find a URL link within google.com (just to contain it for the sake of the example) and colour it in red. Does about the same thing, with the core difference being that this highlights the URL link rather than showing a new cursor icon. You can go even fancier than this, but I'm far too lazy to use my brain more.
JavaScript:
// ==UserScript==
// @name Link Highlight example
// @namespace link highlighter example
// @description Highlights URL link(s) in red, ONLY WITHIN GOOGLE.COM
// @include https://www.google.*/*
// ==/UserScript==
const links = document.getElementsByTagName('a');
let element;
for(let i = 0; i < links.length; i++) {
element = links[ i ];
element.style.color = "#ff0000";
}