Switch from glTF-Sample-Models to the newer glTF-Sample-Assets (#4534)

* init submodule for glTF-Sample-Assets.

* fix left over popd in fetch khronos gltf-smaples.

* remove tests from config.json that no longer have corresponding assets in glTF-Sample-Assets

* add more time for tests to run.

* using checkout with submodule support.

* update goldens for model-viewer + filament for khronos-TextureTransformMultiTest.

Author: bhouston

.github/workflows/fidelity-tests.yml

@@ -5,10 +5,13 @@ on: pull_request
 jobs:
   compare_renders:
     runs-on: ubuntu-latest
-    timeout-minutes: 60
+    timeout-minutes: 90
 
     steps:
     - uses: actions/checkout@v3
+      with:
+        submodules: true
+
     - uses: actions/setup-node@v3
       with:
         node-version: '16.x'

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "packages/shared-assets/models/glTF-Sample-Assets"]
+	path = packages/shared-assets/models/glTF-Sample-Assets
+	url = [email protected]:KhronosGroup/glTF-Sample-Assets