CDS Api reference add index, template, first APIs

Issue-ID: CCSDK-2992
Change-Id: Iad8524cce702deb7f35650b9bd69b6690c0ecc6d
Signed-off-by: JakobKrieg <jakob.krieg@bcmsolutions.de>
diff --git a/docs/index.rst b/docs/index.rst
index 690ba13..af25a59 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -132,6 +132,15 @@
    ui/designer
 
 
+Offered APIs
+----------------------------------
+
+.. toctree::
+   :maxdepth: 3
+
+   api-reference/index
+
+
 Controller Design Studio Presentation
 -------------------------------------