Add Chromium-only Blender WebEngine parity work

blender-5.2.0/doc/python_api/examples/mathutils.Euler.0.py

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+import mathutils
+import math
+
+# Create a new euler with default axis rotation order.
+eul = mathutils.Euler((0.0, math.radians(45.0), 0.0), 'XYZ')
+
+# Rotate the euler.
+eul.rotate_axis('Z', math.radians(10.0))
+
+# You can access its components by attribute or index.
+print("Euler X", eul.x)
+print("Euler Y", eul[1])
+print("Euler Z", eul[-1])
+
+# Components of an existing euler can be set.
+eul[:] = 1.0, 2.0, 3.0
+
+# Components of an existing euler can use slice notation to get a tuple.
+print("Values: {:f}, {:f}, {:f}".format(*eul))
+
+# The order can be set at any time too.
+eul.order = 'ZYX'
+
+# Eulers can be used to rotate vectors.
+vec = mathutils.Vector((0.0, 0.0, 1.0))
+vec.rotate(eul)
+
+# Often its useful to convert the euler into a matrix so it can be used as
+# transformations with more flexibility.
+mat_rot = eul.to_matrix()
+mat_loc = mathutils.Matrix.Translation((2.0, 3.0, 4.0))
+mat = mat_loc @ mat_rot.to_4x4()
+
+# Direct buffer access is supported.
+print(memoryview(eul).tobytes())