Update build automation for changes to directory structures

Re-aligning to new organization

build.py

 
 def packages_list():
     return [
-        ("com.unity.shadergraph", os.path.join("MaterialGraphProject", "Assets", "UnityShaderEditor"))
+        ("com.unity.shadergraph", os.path.join("com.unity.shadergraph"))
-    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "NewNodes"), repo_path, project_path, logger)
-    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "TestAssets"), repo_path, project_path, logger)
-    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "UnityShaderEditor", "Editor", "Testing"), repo_path, project_path, logger)
+    unity_package_build.copy_path_to_project(os.path.join("TestAssets"), repo_path, project_path, logger)
+    unity_package_build.copy_path_to_project(os.path.join("Testing"), repo_path, project_path, logger)
 
 if __name__ == "__main__":
     import sys