[unity] URP Shaders: Package examples as samples. Closes #2366.

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Samples~/Examples/3D/Spine Skeletons/RaptorURP/raptor_Material.mat

@@ -91,7 +91,7 @@ Material:
     - _StencilRef: 1
     - _StraightAlphaInput: 1
     - _Surface: 0
-    - _ZWrite: 1
+    - _ZWrite: 0
     m_Colors:
     - _BaseColor: {r: 0.5, g: 0.5, b: 0.5, a: 1}
     - _Color: {r: 1, g: 1, b: 1, a: 1}

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/package.json

@@ -2,7 +2,7 @@
   "name": "com.esotericsoftware.spine.urp-shaders",
   "displayName": "Spine Universal RP Shaders",
   "description": "This plugin provides universal render pipeline (URP) shaders for the spine-unity runtime.\n\nPrerequisites:\nIt requires a working installation of the spine-unity runtime, version 4.1.\n(See http://esotericsoftware.com/git/spine-runtimes/spine-unity)",
-  "version": "4.1.22",
+  "version": "4.1.23",
   "unity": "2019.3",
   "author": {
     "name": "Esoteric Software",
@@ -19,5 +19,12 @@
     "render pipeline",
     "shaders"
   ],
-  "hideInEditor": false
+  "hideInEditor": false,
+  "samples": [
+    {
+      "displayName": "Examples",
+      "description": "Contains examples for 2D and 3D Universal RP Spine shaders",
+      "path": "Samples~/Examples"
+    }
+  ]
 }