add mesh feature

docs/en/api-reference/mesh/esp_mesh.rst

@@ -0,0 +1,13 @@
+Mesh
+=====
+
+Application Examples
+--------------------
+
+See :example:`mesh` directory of ESP-IDF examples that contains the following applications.
+
+
+API Reference
+--------------
+
+.. include:: /_build/inc/esp_mesh.inc

docs/en/api-reference/mesh/index.rst

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+Mesh API
+*********
+
+.. toctree::
+   :maxdepth: 1
+
+   ESP Mesh <esp_mesh>
+
+Example code for this API section is provided in :example:`mesh` directory of ESP-IDF examples.