chore(Geometry/Manifold/VectorBundle/SmoothSection): add module deprecation (leanprover-community#39312)

Module `SmoothSection` has been deprecated in favour of `ContMDiffSection` - see leanprover-community#39272.

Author: Paul-Lez

Mathlib.lean

@@ -4616,6 +4616,7 @@ public import Mathlib.Geometry.Manifold.VectorBundle.LocalFrame
 public import Mathlib.Geometry.Manifold.VectorBundle.MDifferentiable
 public import Mathlib.Geometry.Manifold.VectorBundle.Pullback
 public import Mathlib.Geometry.Manifold.VectorBundle.Riemannian
+public import Mathlib.Geometry.Manifold.VectorBundle.SmoothSection
 public import Mathlib.Geometry.Manifold.VectorBundle.Tangent
 public import Mathlib.Geometry.Manifold.VectorBundle.Tensoriality
 public import Mathlib.Geometry.Manifold.VectorField.LieBracket

Mathlib/Geometry/Manifold/VectorBundle/SmoothSection.lean

@@ -0,0 +1,10 @@
+/-
+Copyright (c) 2023 Heather Macbeth. All rights reserved.
+Released under Apache 2.0 license as described in the file LICENSE.
+Authors: Heather Macbeth, Floris van Doorn, Michael Rothgang
+-/
+module
+
+public import Mathlib.Geometry.Manifold.VectorBundle.ContMDiffSection
+
+deprecated_module (since := "2026-05-12")