add hand skeleton

res/content/base/config/defaults.toml

@@ -1,2 +1,3 @@
 generator = "base:demo"
 player-entity = "base:player"
+hand-skeleton = "base:hand"

res/content/base/skeletons/hand.json

@@ -0,0 +1,9 @@
+{
+    "root": {
+        "nodes": [
+            {
+                "name": "item"
+            }
+        ]
+    }
+}