Added documentation infrastructure

Created by: stefanoborini

Added documentation infrastructure: sphinx and configuration files.

doc/source/conf.py

@@ -3,6 +3,9 @@
 import sphinx.environment
 from docutils.utils import get_source_line
 import sys
+import os
+
+
 sys.path.insert(0, os.path.join(os.path.abspath(__file__), "..", ".."))
 
 MOCK_MODULES=[]