importing CAESAR structure as agreed

docs/source/products/intro.rst

-Product Catalogue
-==================
-
 Intro
-****
+-----
 
 In CAESAR and ASPIS projects the terms "product" are intended as part of data blocks or software modules that are part of the sharing staff contained and runned inside the database.
\ No newline at end of file
-
-.. include:: data_products.rst
-
-.. include:: sw_products.rst
\ No newline at end of file

docs/source/products/main.rst

+Product Catalogue
+==================
+
+.. include:: intro.rst
+
+.. include:: data_products.rst
+
+.. include:: sw_products.rst
\ No newline at end of file