Add VRChat and GitHub packages to Unity project

Assets/Udon/Editor/GraphModules/VRCInstantiateNodeRegistry.cs

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+using System;
+using System.Collections.Generic;
+using VRC.Udon.Graph.Interfaces;
+using VRC.Udon.Graph.Attributes;
+using VRC.Udon.Graph.NodeRegistries;
+
+[assembly: UdonGraphNodeRegistry(typeof(VRCInstantiateNodeRegistry), "VRCInstantiateNodeRegistry")]
+namespace VRC.Udon.Graph.NodeRegistries
+{
+    public class VRCInstantiateNodeRegistry : BaseNodeRegistry
+    {
+        protected override Dictionary<string, INodeRegistry> NextRegistries => _nextRegistries;
+        private static readonly Dictionary<string, INodeRegistry> _nextRegistries = new Dictionary<string, INodeRegistry>();
+
+        protected override Dictionary<string, UdonNodeDefinition> NodeDefinitions => _nodeDefinitions;
+
+        private static readonly Dictionary<string, UdonNodeDefinition> _nodeDefinitions = new Dictionary<string, UdonNodeDefinition>
+        {
+            {
+                "VRCInstantiate.__Instantiate__UnityEngineGameObject__UnityEngineGameObject",
+                new UdonNodeDefinition(
+                    "VRChat Instantiate",
+                    "VRCInstantiate.__Instantiate__UnityEngineGameObject__UnityEngineGameObject",
+                    typeof(UnityEngine.Object),
+                    new []
+                    {
+                        new UdonNodeParameter
+                        {
+                            name = "original",
+                            type = typeof(UnityEngine.GameObject),
+                            parameterType = UdonNodeParameter.ParameterType.IN
+                        }, 
+                        new UdonNodeParameter
+                        {
+                            name = "clone",
+                            type = typeof(UnityEngine.GameObject),
+                            parameterType = UdonNodeParameter.ParameterType.OUT
+                        } 
+                    },
+                    new string[] { },
+                    new string[] { },
+                    new object[] { },
+                    true
+                )
+            }
+        };
+    }
+}

Assets/Udon/Editor/GraphModules/VRCInstantiateNodeRegistry.cs.meta

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