Adds diagrams (#203)

* Adds diagrams

* Ignore license in drawio files

Author: hbcarlos

.licenserc.yaml

@@ -8,6 +8,7 @@ header:
       Distributed under the terms of the Modified BSD License.
 
   paths-ignore:
+    - '**/*.drawio'
     - '**/*.ipynb'
     - '**/*.json'
     - '**/*.md'