docs: add showcase

Co-authored-by: SuneBear <SuneBear@users.noreply.github.com>

close slidevjs/docs#153

.vitepress/showcases.ts

@@ -190,6 +190,18 @@ export const showcases: ShowCaseInfo[] = [
     at: 'Presentation on Social Engineering in Computers in Society class',
     datetime: '2023-10-20',
   },
+  {
+    title: 'Diablo Health Orb Shader',
+    author: {
+      name: 'SuneBear',
+      link: 'https://github.com/sunebear',
+    },
+    at: 'rctAI Sessions',
+    slidesLink: 'https://rct-ai.github.io/frontend-slides/diablo-health-orb-shader/',
+    sourceLink: 'https://github.com/rct-ai/frontend-slides',
+    cover: 'https://github-production-user-asset-6210df.s3.amazonaws.com/7693264/284304324-db973b4c-a043-4644-932c-826169a1b4d8.gif',
+    datetime: '2022-09-01',
+  },
   // Add yours here!
   {
     title: 'Yours?',