add doc config files and update doc-templates

Signed-off-by: weichen <niweichen@chinamobile.com>
Change-Id: I418ec4daba04f8e09fe4cb4605fd78c37b2faee2
diff --git a/doc-templates/index.rst b/doc-templates/index.rst
new file mode 100644
index 0000000..e3901b3
--- /dev/null
+++ b/doc-templates/index.rst
@@ -0,0 +1,26 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+
+
+Welcome to O-RAN SC your_repo Documentation
+===========================================
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview.rst
+   developer-guide.rst
+   release-notes.rst
+   installation-guide.rst
+   user-guide.rst
+   api-docs.rst
+
+
+.. toctree::
+   :maxdepth: 2
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`