Add Clojure icon (#1002)

* Add Clojure icon SVG

Based on the SVG found on wikimedia:
https://commons.wikimedia.org/wiki/File:Clojure_logo.svg

* Add Clojure icon details

Added the icon details for Clojure. As no official guidelines on what
color to use are given, I went with the (dark)blue color of the logo, as
I personally associate blue with Clojure more then green.

_data/simple-icons.json

@@ -305,6 +305,11 @@
             "hex": "03A9F4",
             "source": "https://clockify.me/"
         },
+        {
+            "title": "Clojure",
+            "hex": "5881D8",
+            "source": "https://commons.wikimedia.org/wiki/File:Clojure_logo.svg"
+        },
         {
             "title": "Cloudflare",
             "hex": "F38020",

icons/clojure.svg

@@ -0,0 +1 @@
+<svg aria-labelledby="simpleicons-clojure-icon" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="simpleicons-clojure-icon">Clojure icon</title><path d="M11.503 12.216c-.119.259-.251.549-.387.858-.482 1.092-1.016 2.42-1.21 3.271a4.91 4.91 0 0 0-.112 1.096c0 .164.009.337.022.514.682.25 1.417.388 2.186.39a6.39 6.39 0 0 0 2.001-.326 3.808 3.808 0 0 1-.418-.441c-.854-1.089-1.329-2.682-2.082-5.362M8.355 6.813A6.347 6.347 0 0 0 5.657 12a6.347 6.347 0 0 0 2.625 5.134c.39-1.622 1.366-3.107 2.83-6.084-.087-.239-.186-.5-.297-.775-.406-1.018-.991-2.198-1.513-2.733a4.272 4.272 0 0 0-.947-.729"/><path d="M17.527 19.277c-.84-.105-1.533-.232-2.141-.446A7.625 7.625 0 0 1 4.376 12a7.6 7.6 0 0 1 2.6-5.73 5.582 5.582 0 0 0-1.324-.162c-2.236.02-4.597 1.258-5.58 4.602-.092.486-.07.854-.07 1.29 0 6.627 5.373 12 12 12 4.059 0 7.643-2.017 9.815-5.101-1.174.293-2.305.433-3.271.436-.362 0-.702-.02-1.019-.058"/><path d="M15.273 16.952c.074.036.242.097.475.163a6.354 6.354 0 0 0 2.6-5.115h-.002a6.354 6.354 0 0 0-6.345-6.345 6.338 6.338 0 0 0-1.992.324c1.289 1.468 1.908 3.566 2.507 5.862l.001.003c.001.002.192.637.518 1.48.326.842.789 1.885 1.293 2.645.332.51.697.876.945.983"/><path d="M12.001 0a11.98 11.98 0 0 0-9.752 5.013c1.134-.71 2.291-.967 3.301-.957 1.394.004 2.491.436 3.017.732.127.073.248.152.366.233A7.625 7.625 0 0 1 19.625 12a7.605 7.605 0 0 1-2.268 5.425c.344.038.709.063 1.084.061 1.328 0 2.766-.293 3.842-1.198.703-.592 1.291-1.458 1.617-2.757.065-.502.1-1.012.1-1.531 0-6.627-5.371-12-11.999-12"/></svg>