Added ChatGPT Tutor

Author: jonobr1

wiki/.vuepress/components/custom-button.vue

@@ -91,6 +91,10 @@
         mask-image: url(/images/npm.svg);
         -webkit-mask-image: url(/images/npm.svg);
       }
+      &.gpt {
+        mask-image: url(/images/gpt.svg);
+        -webkit-mask-image: url(/images/gpt.svg);
+      }
     }
 
     .label {

wiki/.vuepress/public/images/gpt.svg

@@ -11,6 +11,7 @@ A two-dimensional drawing api geared towards modern web browsers. It is renderer
 <custom-button text="Github" type="github" href="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/jonobr1/two.js" />
 <custom-button text="Package" type="npm" href="https://www.npmjs.com/package/two.js" />
 <custom-button text="Sponsor" type="sponsor" href="https://github.com/sponsors/jonobr1" />
+<custom-button text="ChatGPT" type="gpt" href="https://chatgpt.com/g/g-hkcTX8uPm-two-js-tutor" />
 </div>
 
 <carbon-ads />