Added coindcx icon (#2148)

## Description
Added coindcx icon
uploaded coindcx svg and updated json file.

auth/assets/custom-icons/_data/custom-icons.json

@@ -67,6 +67,9 @@
     {
       "title": "Cloudflare"
     },
+    {
+      "title": "CoinDCX"
+    },
     {
       "title": "ConfigCat"
     },

auth/assets/custom-icons/icons/coindcx.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 500 500">
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+  <path fill="#FA4A29" d="m463.25 246.618 29.754-44.007h-28.187l-15.44 24.596-15.883-24.596h-31.163l1.416 1.967-.993-.416a63.329 63.329 0 0 0-23.083-4.046 50.453 50.453 0 0 0-25.92 6.607 46.609 46.609 0 0 0-14.308 12.929 40.334 40.334 0 0 0-15.582-11.806 65.028 65.028 0 0 0-26.344-5.077h-36.686v94.727h36.544a64.026 64.026 0 0 0 26.344-5.202A41.612 41.612 0 0 0 339.3 280.63c3.87 5.299 8.846 9.709 14.59 12.928a51.44 51.44 0 0 0 25.777 6.325 55.023 55.023 0 0 0 24.646-5.34l-1.982 2.953h27.76l18.558-29.108 19.122 29.108h31.73l-36.252-50.878zm-147.452 21.624a25.772 25.772 0 0 1-8.902 5.504 25.916 25.916 0 0 1-10.376 1.523h-10.334v-50.573h10.338c3.62-.305 7.264.165 10.685 1.378a25.427 25.427 0 0 1 9.147 5.65 26.146 26.146 0 0 1 6.374 18.271 24.821 24.821 0 0 1-1.597 9.836 24.965 24.965 0 0 1-5.343 8.436l.008-.025zm101.549 6.911-12.04-11.228a38.572 38.572 0 0 1-10.197 9.149 27.09 27.09 0 0 1-13.6 2.952 25.509 25.509 0 0 1-13.314-3.372 22.838 22.838 0 0 1-8.8-9.415 29.459 29.459 0 0 1-3.118-13.63c-.091-4.623.929-9.2 2.975-13.353a23.258 23.258 0 0 1 8.642-9.415 25.653 25.653 0 0 1 13.738-3.513 24.798 24.798 0 0 1 12.748 3.23 32.061 32.061 0 0 1 9.639 8.733l12.606-12.508 18.415 26.28-17.694 26.09z"/>
+</svg>