External demos (#573)

Some external demo links. Feel free to reject some or all of them if
they are not appropriate

3 of them have WebGL fallbacks and it's not clear what if anything they
demonstrate about WebGPU. One (the "aquarium") uses compute for various
things. They could maybe be translated back to WebGL but no plans.

Author: greggman

sample/webgpuAquarium/meta.ts

@@ -0,0 +1,10 @@
+export default {
+  name: 'WebGPU Aquarium',
+  description: `A WebGPU based under water ocean simulation.`,
+  filename: __DIRNAME__,
+  external: {
+    url: 'https://greggman.github.io/webgpu-aquarium/',
+    sourceURL: 'https://github.com/greggman/webgpu-aquarium',
+  },
+  sources: [],
+};

src/samples.ts

@@ -46,6 +46,7 @@ import twoCubes from '../sample/twoCubes/meta';
 import videoUploading from '../sample/videoUploading/meta';
 import visionTransformer from '../sample/visionTransformer/meta';
 import volumeRenderingTexture3D from '../sample/volumeRenderingTexture3D/meta';
+import webgpuAquarium from '../sample/webgpuAquarium/meta';
 import wireframe from '../sample/wireframe/meta';
 import worker from '../sample/worker/meta';
 import workloadSimulator from '../sample/workloadSimulator/meta';
@@ -177,6 +178,7 @@ export const pageCategories: PageCategory[] = [
       alphaToCoverageEmulator,
       particleLife,
       visionTransformer,
+      webgpuAquarium,
     },
   },