Docs: MeshDataTool: showcase tool in code example
Docs: MeshDataTool: showcase tool in code example

(cherry picked from commit 4f9b993423e803bfda965bb5dcd5dcc00f2f3395)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot