Create preliminary documentation

* Create documentation structure in docs folder
* Move api specification to openapi folder

Issue-ID: CPS-632
Signed-off-by: Bruno Sakoto <bruno.sakoto@bell.ca>
Change-Id: Iec2f703e0d3fe019f89f48dd135c4f96af65c330
diff --git a/docs/content/modeling.rst b/docs/content/modeling.rst
new file mode 100644
index 0000000..b8bf91e
--- /dev/null
+++ b/docs/content/modeling.rst
@@ -0,0 +1,11 @@
+.. This work is licensed under a
+.. Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+..
+.. Copyright (C) 2021 Bell Canada
+
+=====================
+CPS Temporal Modeling
+=====================
+
+.. warning:: Draft