Add 'engine/' from commit 'a8e37fc010'

git-subtree-dir: engine
git-subtree-mainline: b74841629e
git-subtree-split: a8e37fc010

engine/doc/classes/VisualShaderNodeTransformCompose.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="VisualShaderNodeTransformCompose" inherits="VisualShaderNode" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+		Composes a [Transform3D] from four [Vector3]s within the visual shader graph.
+	</brief_description>
+	<description>
+		Creates a 4×4 transform matrix using four vectors of type [code]vec3[/code]. Each vector is one row in the matrix and the last column is a [code]vec4(0, 0, 0, 1)[/code].
+	</description>
+	<tutorials>
+	</tutorials>
+</class>